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Standard 8 : Matter This document was generated on CPALMS - www.cpalms.org A. A working definition of matter is that it takes up space, has mass, and has measurable properties. Matter is comprised of atomic, subatomic, and elementary particles. B. Electrons are key to defining chemical and some physical properties, reactivity, and molecular structures. Repeating (periodic) patterns of physical and chemical properties occur among elements that define groups of elements with similar properties. The periodic table displays the repeating patterns, which are related to the atom's outermost electrons. Atoms bond with each other to form compounds. C. In a chemical reaction, one or more reactants are transformed into one or more new products. Many factors shape the nature of products and the rates of reaction. D. Carbon-based compounds are building-blocks of known life forms on earth and numerous useful natural and synthetic products. Number: SC.912.P.8 Title: Matter Type: Standard Subject: Science Grade: 912 Body of Knowledge: Physical Science Related Benchmarks Code SC.912.P.8.1: Description Differentiate among the four states of matter. Remarks/Examples: Differentiate among the four states of matter (solid, liquid, gas and plasma) in terms of energy, particle motion, and phase transitions. (Note: Currently five states of matter have been identified.) Differentiate between physical and chemical properties and physical and chemical changes of matter. SC.912.P.8.2: Remarks/Examples: Discuss volume, compressibility, density, conductivity, malleability, reactivity, molecular composition, freezing, melting and boiling points. Describe simple laboratory techniques that can be used to separate homogeneous and heterogeneous mixtures (e.g. filtration, distillation, chromatography, evaporation). Explore the scientific theory of atoms (also known as atomic theory) by describing changes in the atomic model over time and why those changes were necessitated by experimental evidence. SC.912.P.8.3: Remarks/Examples: Describe the development and historical importance of atomic theory from Dalton (atomic theory), Thomson (the electron), Rutherford (the nucleus and "gold foil" experiment), and Bohr (planetary model of atom), and understand how each discovery leads to modern atomic theory. Florida Standards Connections: MAFS.K12.MP.4: Model with mathematics. Explore the scientific theory of atoms (also known as atomic theory) by describing the structure of atoms in terms of protons, neutrons and electrons, and differentiate among these particles in terms of their mass, electrical charges and locations within the atom. SC.912.P.8.4: Remarks/Examples: Explain that electrons, protons and neutrons are parts of the atom and that the nuclei of atoms are composed of protons and neutrons, which experience forces of attraction and repulsion consistent with their charges and masses. Florida Standards Connections: MAFS.K12.MP.4: Model with mathematics. Relate properties of atoms and their position in the periodic table to the arrangement of their electrons. SC.912.P.8.5: Remarks/Examples: Use the periodic table and electron configuration to determine an element's number of valence electrons and its chemical and physical properties. Explain how chemical properties depend almost entirely on the configuration of the outer electron shell. Distinguish between bonding forces holding compounds together and other attractive forces, including hydrogen bonding and van der Waals forces. SC.912.P.8.6: Remarks/Examples: Describe how atoms combine to form molecules through ionic, covalent, and hydrogen bonding. Compare and contrast the characteristics of the interactions between atoms in ionic and covalent compounds and how these bonds form. Use electronegativity to explain the difference between polar and nonpolar covalent bonds. Interpret formula representations of molecules and compounds in terms of composition and structure. SC.912.P.8.7: Remarks/Examples: Write chemical formulas for simple covalent (HCl, SO2, CO2, and CH4), ionic (Na+ + Cl- +NaCl) and molecular (O2, H2O) compounds. Predict the formulas of ionic compounds based on the number of valence electrons and the charges on the ions. Characterize types of chemical reactions, for example: redox, acid-base, synthesis, and single and double replacement reactions. SC.912.P.8.8: Remarks/Examples: Classify chemical reactions as synthesis (combination), decomposition, single displacement (replacement), double displacement, and combustion. Apply the mole concept and the law of conservation of mass to calculate quantities of chemicals participating in reactions. SC.912.P.8.9: Remarks/Examples: Recognize one mole equals 6.02 x 10^23 particles (atoms or molecules). Determine number of particles for elements and compounds using the mole concept, in terms of number of particles, mass, and the volume of an ideal gas at specified conditions of temperature and pressure. Use experimental data to determine percent yield, empirical formulas, molecular formulas, and calculate the mass-tomass stoichiometry for a chemical reaction. Describe oxidation-reduction reactions in living and non-living systems. SC.912.P.8.10: Remarks/Examples: Identify the substance(s) losing and gaining electrons in oxidation-reduction reactions. Discuss voltaic cells, various types of batteries, electrolysis of water, smelting and purification of metals, electrolysis of brine versus molten NaCl, neutralization reactions, electrolytic cells, and living systems (photosynthesis and cellular respiration). Relate acidity and basicity to hydronium and hydroxyl ion concentration and pH. SC.912.P.8.11: Remarks/Examples: Use experimental data to illustrate and explain the pH scale to characterize acid and base solutions. Compare and contrast the strengths of various common acids and bases. Describe the properties of the carbon atom that make the diversity of carbon compounds possible. SC.912.P.8.12: Remarks/Examples: Explain how the bonding characteristics of carbon lead to a large variety of structures ranging from simple hydrocarbons to complex polymers and biological molecules. Identify selected functional groups and relate how they contribute to properties of carbon compounds. SC.912.P.8.13: Remarks/Examples: Recognize functional groups in structural formulas of carbon molecules (e.g. sugars, proteins, nucleotides, amino acids, hydroxyl groups which form alcohols, carbonyl groups which form aldehydes / ketones, carboxyl groups which form carboxylic acids, etc.). Related Access Points Independent Access Point Number SC.912.P.8.In.1: SC.912.P.8.In.2: SC.912.P.8.In.3: SC.912.P.8.In.4: SC.912.P.8.In.5: SC.912.P.8.In.6: SC.912.P.8.In.7: SC.912.P.8.In.8: Access Point Title Classify states of matter as solid, liquid, and gaseous. Compare characteristics of physical and chemical changes of matter. Identify the nucleus as the center of an atom. Recognize that the periodic table includes all known elements. Identify that compounds are made of two or more elements. Identify formulas for common compounds, such as H2O and CO2. Identify properties of common acids and bases. Identify that carbon is found in all living things. Supported Access Point Number SC.912.P.8.Su.1: SC.912.P.8.Su.2: SC.912.P.8.Su.3: SC.912.P.8.Su.4: SC.912.P.8.Su.5: SC.912.P.8.Su.6: SC.912.P.8.Su.7: SC.912.P.8.Su.8: Access Point Title Identify examples of states of matter as solid, liquid, and gaseous. Identify examples of physical and chemical changes. Recognize that atoms are tiny particles in materials, too small to see. Recognize examples of common elements, such as oxygen and hydrogen. Recognize examples of common compounds, such as water and salt. Match common chemical formulas to their common name, such as H2O to water. Categorize common materials or foods as acids or bases. Recognize that carbon is found in all living things. Participatory Access Point Number SC.912.P.8.Pa.1: SC.912.P.8.Pa.2: SC.912.P.8.Pa.3: Access Point Title Select an example of a common solid, liquid, and gas. Recognize a common chemical change, such as cooking, burning, rusting, or decaying. Recognize that the parts of an object can be put together to make a whole. SC.912.P.8.Pa.3: SC.912.P.8.Pa.4: SC.912.P.8.Pa.5: Recognize that the parts of an object can be put together to make a whole. Match common compounds to their names or communication symbols. Recognize that some acids and bases can be dangerous and identify related hazard symbols. Related Resources Text Resource Name "Cooking with Chemistry": American Elements: Description This informational text resource is intended to support reading in the content area. This article from the Royal Society of Chemistry's Chemistry World magazine explains molecular gastronomy, a scientific discipline based on the physics and chemistry of cooking. This web site features an interactive periodic chart that provides information on the elements, including a description, physical and thermal properties, abundance, isotopes, ionization energy, the element's discoverer, translations of element names into several languages, and bibliographic information on research-anddevelopment publications involving the element. Additional information includes technical information and information on manufactured products for Ammonium Dichromate: Artistic Chemistry: A Beautiful Collaboration: Avogadro: Voice in the Wilderness: elemental metals, metallic compounds, and ceramic and crystalline products. The American Elements company manufactures engineered and advanced material products. This article explains the uses and properties of ammonium dichromate, an “explosive” compound once common in children’s chemistry sets, and the reasons why society has gradually moved away from using this compound. This informational text resource is intended to support reading in the content area. Chemistry can be an important part of creating art. This article discusses two examples of this: the presence of redox reactions in making Raku pottery, and the use of cleaning agents when creating stained glass. The process of making both types of art is described, along with the chemical reactions involved. This informational text resource is intended to support reading in the content area. The article explains how Avogadro's hypothesis, proposed prior to the publishing of Dalton's atomic theory, was initially rejected. But his hypothesis turned out to be the key to solving many problems facing chemistry in the 1800s. The article describes how the later acceptance of his original idea changed the Chemistry Unearths the Secrets of the Terracotta Army: Demystifying Gross Stuff: Do Diamonds Really Come from Coal?: subject forever and even allowed for the creation of the periodic table. This informational text resource is intended to support reading in the content area. In 1974 a group of Chinese farmers digging a well came across a great discovery: the Terracotta Army from the tomb of the first emperor of China. Since the discovery, archaeologists have been researching many aspects of the artifacts. Recently, with the use of chemistry, they have been able to determine many details of the weapons of the Terracotta Army, including their chemical composition and production techniques. This informational text resource is intended to support reading in the content area. From pimples to bad breath to passing gas, this article clears up the science behind some of the gross things our bodies do— acne, bad breath, and flatulence—in an attempt to make the gross seem a little less so. This resource is intended to support reading in the content area. This article debunks a popular Superman myth. Even though diamonds and coal are both different forms of carbon, and pressure is a key part of turning carbon into diamonds, the author explains why Superman Graphene: The Next Wonder Material?: History Of Chemistry/Famous Chemists: Kitty Litter Chem: Molten Salts Could Improve Fuel Economy: cannot crush coal to make diamonds. The article goes on to explain how diamonds are actually formed. This informational text resource is intended to support reading in the content area. The article places special attention on the properties of graphene and its future potential uses. This informational text resource is intended to support reading in the content area. This article describes the history of chemistry through the scientific findings and major contributions of several important chemists. These chemists, including Joseph Priestly, Dmitri Mendeleev, and Niels Bohr, discovered properties of gases and other materials, developed the Law of Conservation of Mass and the periodic table, and contributed to the development of atomic theory. This informational text resource is intended to support reading in the content area. Silly cat videos are all the rage on the Internet, but cleaning up after them can be a stinky chore! In this article, students will delve into the history of kitty litter and the chemistry behind getting rid of the stink. This informational text resource is intended to support reading in the content area. This text describes a new technology that might a boost car engine’s efficiency by 2% by adding ionic liquids called “molten salts” to lubricating engine oil. The addition of the molten salts has the potential to reduce millions of barrels of oils from being imported into the United States annually. Oxidation-Reduction Reactions -- Real-Life Implications: Paintball: Chemistry Hits its Mark: This informational text resource is intended to support reading in the content area. Oxidationreduction reactions are one of the main types of reactions students are taught in chemistry class, but what are some real-life examples of this often awe-inspiring reaction? This article looks at the science behind some reallife oxidation-reduction reactions, including explosions (in cars and trains), space shuttle fuel, and many uses of metals. The importance of these reactions in limiting systems is also covered. This informational text is intended to support reading in the content area. The article discusses how the concept of paintball originated and how it has changed into the sport of today. It also describes how the different states of matter are all present in the components of paintball. This informational text resource is intended to support reading in the content area. This simple text Periodic Table of the Elements: explains the basics of how the periodic table is organized and summarizes the information that the table includes about each element. This informational text resource is intended to support reading in the content area. This article describes researchers' development of a material similar to plastic that regenerates or grows back Regenerating Plastic Grows Back After Damage: after damage. Researchers have discovered that the material is similar to biologic regenerative functions in living organisms and works by bonding to the damaged area and filling the holes and cracks to repair itself. This informational text is intended to support reading in the content area. Scientists use normal table salt and expose it to extreme conditions to create new Salty Surprise: Ordinary Table Salt Turns into 'Forbidden' Forms: compounds that defy the classical rules of chemistry. These new compounds may help to produce better products with new applications and understand planetary cores. This informational text is intended to support reading in the content area. This Snapshots Differentiate Molecules From Their Mirror Image: article describes how scientists were able to reveal the spatial structure of lefthanded and right-handed The Quest for a Clean Drink: chiral molecules in gaseous solutions by using a combination of mass spectrometry and the Coulomb explosion. This informational text resource is intended to support reading in the content area. In America, clean water flows with the turn of a knob, but many countries do not have this luxury. This article looks at three different ways scientists have created treatment systems for drinking water in poor countries like India and Bangladesh. Lesson Plan Name A Bright Idea: A Closer Look at pH!: Acid or Base???: Description Students will look for a correlation between pH and conductivity. They will also compare ionic, molecular, and solids for conductivity. The procedure provided above is a guided, step-bystep presentation. Remove steps to achieve the level of inquiry desired for your class. The purpose of this activity is to classify equimolar (equal concentration) acidic and basic solutions as strong or weak by analyzing pH measurements. Students will complete a lab on acids and bases. Students will test various household substances to see if they are acids or bases. They Acids, Bases, and pH: All in the Family: Atomic Theory Stations - Eckert: will create a pH scale and label their substances on it. This is a lesson for introducing the concepts of acids, bases, and pH. This lesson allows the students to become familiar with the elements on the periodic table. The students play a game of go fish using cards they've made from index cards. The students match the cards according to their oxidation number in a similar pattern to how the game go fish is played. The students also use the index cards to make flash cards of their elements and use the cards as a study tool. The students will learn how subatomic particles and chemical characteristics determine the placement of elements on the periodic table. This is a set of 8 stations (each station lasts 15-20 minutes) that students may complete individually or in small groups. The stations focus on the development of the atomic theory and introduce students to the concept of the subatomic particles, how they were discovered, and where they are located within the atom. The stations can be grouped together and used as one lesson for 2-3 consecutive days, or they can be split into smaller increments and used over the course of several lessons. Balancing Chemical Equations Using a Visual Aid: Behavior of Gases: Disaster at Lake Nyos: Behind the Scenes with Double-Replacement Reactions: BIOSCOPES Summer Institute 2013 - Atomic Models: BIOSCOPES Summer Institute 2013 - Solutions: Students will use this kinesthetic activity to further their knowledge regarding balancing chemical equations. Students, through discussion and structured inquiry, will learn about the behavior of gases under various conditions. Students will be able to apply these concepts to everyday objects such as soda bottles, fire extinguishers, hot air balloons, propane tanks, and aerosol products. In this lesson plan the students will engage in a laboratory experiment that requires them to identify the precipitate that forms when two aqueous solutions react together. The students will apply solubility rules to determine the chemical formula and name of the precipitate that forms during the laboratory experiment. This lesson is designed to be part of a sequence of lessons. It follows CPALMS Resource #52952 "BIOSCOPES Summer Institute 2013 - Solutions." The lesson employs a predict, observe, explain approach along with inquirybased activities to enhance student understanding of atomic structure. This lesson is designed to be part of a sequence of lessons. It follows CPALMS Resource #52705 "BIOSCOPES Summer BIOSCOPES Summer Institute 2013 - States of Matter: Chemical Reactions Word Sort: Classifying the Universe: What is matter and how do we as scientists categorize it?: Institute 2013 - States of Matter" and precedes CPALMS Resource #52961 "BIOSCOPES Summer Institute 2013 - Atomic Models." The lesson employs a predict, observe, explain approach along with inquirybased activities to enhance student understanding of properties aqueous solutions in terms of the kinetic molecular theory and intermolecular forces. This lesson is designed to be part of a sequence of lessons. It follows CPALMS Resource #52957 "BIOSCOPES Summer Institute 2013 Thermal Energy" and precedes CPALMS Resource #52961 "BIOSCOPES Summer Institute 2013 Solutions." The lesson employs a predict, observe, explain approach along with inquiry-based activities to enhance student understanding of states of matter and phase changes in terms of the kinetic molecular theory. This is meant to be a review/extension lesson about chemical reactions. Students will use a card sort to distinguish chemical reactions in various forms of representation. This is a hands-on lesson teaching what matter is and the differences between pure substances (elements and compounds) and mixtures Converting from moles to mass (grams) : Dancing Ionic Compounds: Determining the Empirical Formula of Hydrates: Distinguishing between Single-Replacement and DoubleReplacement Reactions: (heterogeneous and homogeneous). Lesson on finding molar mass and converting from moles to mass (grams) for pure substances (elements, compounds and molecules) using the periodic table and the molar road map. This lesson concentrates on teaching students to name and create formulas for ionic compounds with transition metals and group 1 and 2 metals. It uses a gradual release model by first guiding students through different scenarios, allowing them to work in groups, and finally working on an individual question. The Dancing Ionic Compounds activity is meant to be fun and engaging, helping students master the writing and naming of ionic compounds. Students will apply the mole concept and the law of conservation of mass to determine the empirical formula of a hydrate. Students will also use data from their experiment to understand the concept of mole ratios, formulas and predicting products from reactions. Students will interpret formula representation of compounds and understand their percent composition. The teacher will perform a demonstration that requires the students to use their Dollars for Density: Double Replacement Reaction Lab: Fish Tank pH: knowledge of singlereplacement and doublereplacement reactions to distinguish between the two types of reactions. The students will also make predictions, observations, and explanations about the products that will form when a chemical reaction takes place. This is a guided inquiry activity in which students use simple lab procedures and discussions to develop and apply the concept of density. Students collect and graph data which they use to explore the relationship between mass and volume. Then students use their graph, rather than a memorized formula, to identify the unknown substance. Students will perform a set of double replacement reactions. They will be given the opportunity to record observations, write formulas for compounds, and balance the chemical equations for a set of double replacement reactions. The student lab instruction sheet includes an introduction to chemical equations, student instructions, and post lab questions in a foldable booklet format. The lesson incorporates language arts and physical science content through the use of supplemental readings and Model Eliciting Activity. Gluva-Glop: Introduction to Acids & Bases: what are they and how do we as scientists measure them?: Investigating the pH of Soils: Ionic Bonding Mates: In this lesson student will use their knowledge of the pH scale, hydronium ion concentrations and critical thinking to find the solution to a problem. This is a rework of the lab creating "Silly Putty" from a traditional cookbook lab to an inquiry based lesson. A situational story is read to the class and students are then challenged to create the "lost" substance. Students are provided the raw materials but not given exact amounts. Through multiple trials, students experiment with ways to come up with a sample that closely resembles the one provided at the beginning of the lesson. A hands-on, lab-based introduction to the pH scale and the characteristics of acids and bases. In this activity students will conduct research then test the effects of adding products to soil. Students will learn about soil pH, what factors affect the pH of soil and how important it is to the growth of plants. Students will learn to use reputable resources to support their findings. Students will be expected to write a detailed lab report that thoroughly explores the concept while integrating the data from their investigation. This activity addresses the part of the standard that focuses on only one type of I-on-it (Ionic) or not?: Last...but certainly not the least: bonding, ionic bonding. In this engaging activity, students will find several bonding mates. Students will use their knowledge of ions to practice writing formulas for ionic compounds. Students will collaborate with their peers as they look to make bonds. Students will complete the table and discuss how to name the ionic compounds. Students will complete this activity with a greater understanding of the formation of ionic bonds. In this physically engaging activity students will debate with their peers whether a randomly drawn statement/diagram/compound name or formula applies to ionic bonds, covalent bonds or both types of bonds. Then sort themselves throughout the room accordingly. Peer support and collaboration are encouraged while the teacher facilitates proper placement. Activity concludes with a T chart graphic organizer and a writing assignment where students personify the bond types. Through this activity, students will create a periodic table with Electron Dot Diagrams. This investigation allows students to explore and recognize patterns of the periodic table. This lesson allows students to draw conclusions and clearly demonstrates that atoms of elements in the Let's Get Physical: Making Menus: Mass Mole Relationships: A Statistical Approach To Accuracy and Precision: same group have the same number of valence electrons while sharing similar properties and characteristics. The following lesson provides instruction and activities that introduce the physical properties and physical changes of matter. The guided practice gives students the opportunity to engage in analyzing real world examples and their unique physical properties. Students will experience a interactive virtual density lab. The culminating activity for "Let's Get Physical" will be a creative collaborate activity, in which students will have to work together to create a game, chidren's book, song or skit to introduce the 7 physical properties of matter to elementary aged students. Students can organize information about a chemical substance into a menu that will help them establish their thoughts when converting using the concept of the mole. Ordering off their menu narrows the information to only what is relevant and allows them to easily set up factor label conversions. The lesson is a laboratorybased activity involving measurement, accuracy and precision, stoichiometry and a basic statistical analysis of data using a scatter plot, Metallic Single-Replacement Reactions: Modeling Compounds with Fruit Loops: Modeling the Kinetic Theory: Mole Relay: linear equation, and linear regression (line of best fit). The lesson includes teacherled discussions with student participation and laboratorybased group activities. This lesson requires students to investigate and analyze metallic single-replacement reactions during a laboratory experiment. In this activity students will model ionic and covalent bonds. Students will use colored fruit loops to represent electrons of various atoms. Students will engage in a directed inquiry lab to model the kinetic theory of matter. In the end, students should have a firm grasp of how matter's behavior is changed when its structure is changed during phase transitions. To be successful in chemistry, students need a solid foundation in solving multi-step (sequential) problems. This activity uses inexpensive materials to strengthening students understanding of stoichiometry problems during an engaging group competition. A studentcentered approach develops the reasoning skills needed for scientific thinking. Each student assumes a different role as they complete work in a complex stoichiometry problem. Students may receive immediate feedback Molecular Compound Lewis Dot Structures: My 2 Cents: Mystery Isotopes: Periodic Organization: from their teammates so that success is felt by all learners. In this lesson, students will be introduced to bonding and what enables an element to bond in a variety of ways (single, double, and triple bonds). Students predict how the mass of a penny changes over time, devise a method to test their prediction, collect/analyze data and determine the composition of a penny based on physical properties and calculations. This student-centered activity allows freedom from mistakes as they explore their learning in a supportive environment. Through this engaging activity students work as a group to create models of isotopes with stickers and construction paper. Students also use models created by their peers to analyze the number of subatomic particles and determine isotopes' names. All worksheets and data collection sheets are included. This lesson explores how Mendeleev organized the periodic table by explaining the different trends and properties of elements. Students can determine the different relative properties of an element based on its location on the periodic table. Physical and Chemical Changes Observed in Pancakes: Precipitate Lab: Predicting the Products of Double-Replacement Reactions: Students will observe the physical and chemical changes that occur during pancake preparation while following the scientific method. Students will make chalk by reacting calcium chloride with sodium bicarbonate. They will be able to watch a precipitate being formed. This lab will help them understand the difference between a precipitate and a filtrate and understand what reaction type the reaction isdouble displacement. In the next class period, the precipitate will be dry and the students can use the chalk they made and draw with it. This is a General Lesson Plan that introduces doublereplacement reactions. The students will learn how to predict the products when two aqueous solutions react together and use solubility rules to predict the states of matter of the products. During the Teaching Phase, the teacher uses direct instruction to introduce double-replacement reactions. During the direct instruction, the students will record their notes on a Notes Template. The Teaching Phase is followed by Guided Practice where the educator models how to predict the products of a doublereplacement reaction and the states of matter of the products. The last phase is the Independent Practice where the students use the cooperative learning strategy RallyCoach to practice predicting the products and states of matter for double replacement reactions. This resource introduces students to singlereplacement reactions. The students will learn to use the activity series to predict whether or not a singlereplacement reaction will take place. This introduction includes a P.O.E. Reactivity of Metals activity, Cornell Notes reading activity, and a Summative Assessment activity. The order of instruction is as follows: Reactivity of Metals: 1. Complete the P.O.E Reactivity of Metals Activity, 2. Then have the students read the textbook or the Single-Replacement Reactions handout (see attachments) to obtain a mini lecture of single-replacement reactions. The students should use the Cornell Notes Template to record their notes, 3. Complete the summative assessment, the ReP.O.E Reactivity of Metals activity, to check for student understanding of single-replacement reactions. Redox Reactions: Rodent Infestation: Shake it up: SMALL: Shape Memory Alloy Lab: In this lesson, students will be introduced to the concept of oxidation-reduction reactions. Students will learn how to identify the oxidized/reduced species and determine whether a reaction is redox or not. Students will investigate this concept as it pertains to chemical processes in living things (photosynthesis, respiration, etc). The lesson integrates language arts and science through the use of a Model Eliciting Activity. The lesson requires student collaboration to develop a solution to a problem. Chemistry is integrated because they must utilize their knowledge of the periodic table. Students will model molecular motion with everyday materials (shaker bottles) then associate their model/actions to the phase transitions of water while graphing its heat curve from data collected during a structured inquiry lab. Shape Memory Alloys are metals that can return to or 'remember' their original shape. They are a cutting edge application for Chemistry, Physics, and Integrated Science. The activities in this lesson work well for the study of forces, Newton's Laws, and Solutions are Everywhere: The History of the Atomic Model: The Mystery of the Chemistry Lab Explosion: The Structure of an Atom and its Particles: electricity in physics. They also lend themselves well to crystalline structures, heat of reaction, and bonding in chemistry. In addition, students could study applications for the materials in the medical and space industries. Students will look at similar solutes and create solutions with them. They will compare and contrast them and record their observations. The lesson is about the five scientists and their contributions to the theory of the atomic model. The scientists that we will study are John Dalton, J. J. Thompson, Ernest Rutherford and Niels Bohr. The students will also investigate what the present atomic model looks like and why the scientists have concluded that this is now the electron cloud model. This lesson requires the students to use their observation skills and their knowledge of singlereplacement and doublereplacement reactions to solve a mystery. The students will be performing a laboratory experiment to solve the mystery; therefore, groups of two working in stations are ideal for completing this activity. In this lesson, the 5E model is used to teach students about the structure of an atom. Students will study the To Friend or Not Friend: Uniqueness of Carbon: Using Acid/Base Neutralization to Study Endothermic vs Exothermic Reactions and Stoichiometry: Voltaic Cells: atom's subatomic particles, including their masses, electrical charges, and locations. The in this activity on chemical bonding, students will mimic Facebook, choosing "friends" based on their oxidation number. When the oxidation numbers of two or more elements equal zero, a stable bond has been formed. The purpose of this activity is for students to understand the rules for which elements bond to make compounds. In this lesson, students will be introduced to bonding and will ultimately learn that carbon is a versatile element in terms of its ability to bond in so many different ways (single, double, and triple bonds). In this lesson, students will experimentally determine whether an acid/base neutralization reaction is endothermic or exothermic. They will also use their results to identify the limiting reactant at various times in the process and calculate the concentration of one of the reactants. In this lesson, students will learn about how batteries produce electrical power. Students will learn how a voltaic cell is designed and be able to identify the important characteristics of a cell as well as calculate cell potential. What's In My Water???: Why so dense?: Through an engaging introductory lesson, laboratory, and virtual simulation, students will be prepared to perform a guided inquiry laboratory investigating the amount of sodium sulfate present in an unknown solution. Students will learn the importance of separation techniques such as filtration, determine which reactions form precipitates, and grow in their knowledge of stoichiometry through gravimetric analysis. This lesson is designed as an introduction to standard SC.912.P.8.1 and allows students to compare the properties of the three main phases of matter (solid, liquid, and gas) before competing cooperatively to build the most dense or solid structure possible in a guided inquiry activity. The lesson plan follows the 5E model and incorporates elements of the guided inquiry and POE (predict, observe, and explain) models. Students will be evaluated summatively with the use of argument building. Perspectives Video: Professional/Enthusiast Name Description Learn how molecules have the potential A Moment on Dipole-Dipole Forces: to be polar, but not all are. Glass artist Russel Scaturro explains why Graphite for High-temperature Glass Art Fabrication: graphite tools are required for fabrication with borosilicate glass. Get sooted up and join a collier as he Making Charcoal: discusses charcoal production at historic Mission San Luis. Dig in as Daniel Golik, Owner at ChillN, describes how liquid nitrogen is used to create smooth ice cream in Miami. Nitrogen Ice Cream: This video was created by students at Alonzo And Tracy Mourning Senior High School in Miami as part of the SECME STEM video competition. A welder wields a plasma torch to cut solid metal like a hot knife through See the Four States of Matter in Welding!: butter. It's one-stop shopping to see all four states of matter. Angela Dial discusses how she solves systems of equations to determine how the composition of ocean floor sediment Solving Systems of Equations, Oceans & Climate: has changed over 65 million years to help reveal more information regarding climate change. Master candymaker Wes Raley describes The Science and Math Behind Sour Fizzy Candy: the process and science behind making sour fizzy candy. Virtual Manipulative Name Acid-Base Solutions: Description How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution. Some of the topics to investigate: Atom Builder: Atomic Interactions: Given acids or bases at the same concentration, demonstrate understanding of acid and base strength by 1. Relating the strength of an acid or base to the extent to which it dissociates in water. 2. Identifying all the molecules and ions that are present in a given acid or base solution. 3. Comparing the relative concentrations of molecules and ions in weak versus strong acid (or base) solutions. 4. Describing the similarities and differences between strong acids and weak acids or strong bases and weak bases. Demonstrate understanding of solution concentrated by: 1. Describing the similarities and differences between concentrated and dilute solutions. 2. Comparing the concentrations of all molecules and ions in concentrated versus dilute solutions of a particular acid or base. Describe how common tools (pH meter, conductivity, pH paper) help identify whether a solution is an acid or base and strong or weak and concentrated or dilute. This is a virtual manipulative that students may use to construct various atoms up to carbon by creating protons and neutrons from up and down quarks and adding electrons. Students are challenged to keep the electrical charge of the atom neutral and to ensure the imbalance between protons and neutrons doesn't become great enough to result in radioactive decay! In this simulation, explore the interactions between various combinations of two atoms. Specific features of the simulation allows you to see either the total force acting on the atoms or the individual attractive and repulsive forces. Options for learning: Explain how attractive and repulsive forces govern the interaction between atoms. Describe the effect of potential well depth on atomic interactions. Describe the process of bonding between atoms in terms of energy. This activity will allow you to practice balancing a chemical equation. You will have to make sure you are following the law of conservation of mass and recognize what can change to balance an equation. You can: Balancing Chemical Equations: Balance a chemical equation. Recognize that the number of atoms of each element is conserved in a chemical reaction. Describe the difference between coefficients and subscripts in a chemical equation. Translate from symbolic to molecular representation. An assessment activity is included below. Click to Run This activity will allow you to make colorful concentrated and dilute solutions and explore how much light they absorb and transmit using a virtual spectrophotometer. You can explore concepts in many ways including: Beer's Law Lab: Build an Atom: Describe the relationships between volume and amount of solute to solution concentration. Explain qualitatively the relationship between solution color and concentration. Predict and explain how solution concentration will change for adding or removing: water, solute, and/or solution. Calculate the concentration of solutions in units of molarity (mol/L). Design a procedure for creating a solution of a given concentration. Identify when a solution is saturated and predict how concentration will change for adding or removing: water, solute, and/or solution. Describe the relationship between the solution concentration and the intensity of light that is absorbed/transmitted. Describe the relationship between absorbance, molar absorptivity, path length, and concentration in Beer's Law. Predict how the intensity of light absorbed/transmitted will change with changes in solution type, solution concentration, container width, or light source and explain why? Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas! Compounds, Molecules and the Mole: The relationship of numbers of particles on the atomic scale to measurements made on the bulk scale uses the concept of the mole. Using this simulation, the learner will be able to explore the relationship between mass, moles, molecules and atoms. This simulation will provide the learners with a chance to increase their understanding of a molecular shape. The learners will be required to follow a "Lewis dot structure" which involves two basic principles: Create Molecular Shape: Electron Configurations: Gas Properties: 1. The shapes of the molecule is determined by the repulsion between electron pairs in the outer shell of the central atom. Both bond pairs and lone pairs must be considered. 2. Lone pairs repel more than bond pairs. The electron configuration of an atom is the representation of the arrangement of electrons that are distributed among the orbital shells and subshells. The simulated activity will help the learners practice the arrangement of the electrons. The learners will be required to follow rules in order to correctly divide the electrons in the orbitals based on the valency of the atom. Students will pump gas molecules to a box and see what happens as they change the volume, add or remove heat, change gravity, and more. Measure the temperature and pressure, and discover how the properties of the gas vary in relation to each other. Students can predict how changing a variable among pressure, volume, temperature and number influences other gas properties. Introduction to Compounds - How Atoms Bond: Limiting Reactants: Models of the Hydrogen Atom Simulation: Periodic Table: pH Scale: Students can predict how changing temperature will affect the speed of molecules. Students can rank the speed of molecules in thermal equilibrium based on the relative masses of molecules. I use this simulation as an introduction to molecules and compounds to help students understand that atoms are not randomly joined to form a compound/molecule, but join in very specific patterns. In order to successfully complete the simulation activity, students must re-arrange molecules various ways. (In CH3COOH, both oxygens are bonded to the carbon atom, for example) This virtual manipulative will help the learners to recognize the limiting reactant effect in a reaction. Limiting reactants can be explained from the extent to which reactions that involve more than one reactant can produce products depends on the quantities of those reactants combined. In most cases, one reactant will be totally consumed while the other reactants remain in excess. How did scientists figure out the structure of atoms without looking at them? Try out different models by shooting light at the atom. Check how the prediction of the model matches the experimental results. This unique periodic table presents the elements in an interesting visual display. Select an element to find an image of the element, a description, history, and even an animation. Other chemical data is linked as a PDF file (requires Acrobat Reader). Students can test the pH of several substances and visualize hydronium, hydroxide, and water molecules in solution by concentration or the number of molecules. Students can add water to a given substance to see the effects it will have on the pH of that substance; or they can create their own custom substance. Precipitation Reaction Systems: Rutherford Scattering: Precipitation reactions occur when cations and anions of aqueous solutions combine to form an insoluble ionic solid, called a precipitate. This simulation explores systems for which precipitation reactions are possible.A precipitation reaction is controlled by the magnitude of the solubility product, solubility product constant and the concentrations of the ions in solution. This virtual manipulative will help you investigate how Rutherford figured out the structure of the atom without being able to see it. This simulation will allow the you to explore the famous experiment in which Rutherford disproved the Plum Pudding model of the atom by observing alpha particles bouncing off atoms and determining that they must have a small core. Further explorations of the tutorial could include: States of Matter: Titrations: Describe the qualitative difference between scattering off positively charged nuclei and electrically neutral plum pudding atoms. For a charged nucleus, describe qualitatively how angle of deflection depends on: energy of incoming particle, impact parameters, and charge of target. Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. This virtual manipulative will help you understand the process of titration, which is a neutralization reaction that is performed in order to determine an unknown concentration of acid and base. With this simulation, you will be able to calculate the moles of the acid with the understanding that the moles of acid will be equal to the moles of base at the equivalence point. Explore pressure under and above water. See how pressure changes as one change fluids, gravity, container shapes, and volume. With this simulation you can: Under Pressure: Investigate how pressure changes in air and water. Discover how to change pressure. Predict pressure in a variety of situations. Understanding molecular polarity by changing the electron-negativity of atoms in a molecule to see how it affects polarity. See how the molecule behaves in an electric field. Change the bond angle to see how shape affects polarity. See how it works for real molecules in 3D. Understanding Polarity: Some learning goals: •predict bond polarity using electronnegativity values •indicate polarity with a polar arrow or partial charges •rank bonds in order of polarity •predict molecular polarity using bond polarity and molecular shape Video/Audio/Animation Name Description This short YouTube video offers an amusing means for students to learn about the way alkali metals react in Alkali Metals in Water: water. When teaching trends of the Periodic Table this video works well emphasizing similar properties of groups. This is a video series that explains (introduces) properties of the carbon Climate Connections Global Warming: All about Carbon: atom and parts of the carbon cycle. The video is entertaining and highly relevant for content. Compounds: Acids and bases: Concentration: Element Math Game: Science Crossword Puzzles: Shapes of Molecules: This resource is an interactive video that compares and contrasts acids and bases while showing properties and interactions. Explain the concept of concentration Explain the effect of concentration changes on colors of solutions Demonstrate the effect of changing the amount of solute, or solvent, or both on the concentration of the solution Identify a saturated solution Students determine the number of protons, electrons, neutrons, and nucleons for different atoms A collection of crossword puzzles that test the knowledge of students about some of the terms, processes, and classifications covered in science topics Differentiate between electron pair and molecular geometry Learn how to name electron pair and molecular geometries for molecules with up to six electron groups around the central atom Illustrate how electron pair repulsion affects bond angles Lesson Study Resource Kit Name Atomically Correct: Description A Lesson Study Resource Kit that addresses interpreting chemical reactions at three areas of cognition: the macroscopic world of observable properties (sensory); the microscopic world of atoms, molecules, ions, and subatomic particles (diagrams); and the symbolic world of chemical formulas, equations, and symbols. Tutorial Name Atoms and Bonding: Central Idea: Quenching Your Thirst for Literacy Skills: Hydrogen Bonding Force: Description This tutorial will help the learner understand the relationship between atoms, their electrons, and the chemical bonds they can form. Click "View Site" to open a full-screen version. This tutorial is designed to help secondary science teachers learn how to integrate literacy skills within their science curriculum. The focus on literacy across content areas is designed to help students independently build knowledge in different disciplines through reading and writing. This tutorial will demonstrate a series of steps that teachers can teach students to help them determine the central ideas of a science text. This tutorial will also explain what an effective summary contains and provide steps teachers can use to help students with paraphrasing. A hydrogen bond is the electromagnetic attractive interaction between polar molecules in which hydrogen is bound to a highly electronegative atom, such as nitrogen, oxygen, or fluorine. This tutorial will help the learner understand how hydrogen bonds form between the molecules. An organism must maintain its cellular organization and internal equilibrium despite the external force that act upon it. Cells take in Introduction to Metabolism: nutrients as duel to support their constant fight against a chaotic, disordered world. This tutorial will help the learners to understand the process of metabolism. This video explains Oxidation and Reduction in Cellular Respiration: oxidation and reduction in cellular respiration. This Khan Academy video explains oxidation and Oxidation and Reduction Review From Biological Point-of-View: reduction reactions from a biological point of view. This tutorial will help the learners to understand the molecular structure of the Water: water molecule, its interand intra-molecular bonds, and the formation of hydroxide ions. Formative Assessment Name Balancing Act: Description This activity allows students to practice balancing chemical equations. It has three difficulty levels, and the students can practice with 5, 10, or 15 questions. Perspectives Video: Expert Name Carbon: Description Harry Kroto, from Florida State University, discusses the amazing element carbon, the compounds it forms, and the uses including carbon nanotubes. Carbon can take many forms, including foam! Learn more about how geometry and the Carbon Foam and Geometry: Monte Carlo Method is important in understanding it. Keep an eye on pH as you learn about what pH Scale: makes acids and bases. Don't overreact when this chemist describes Physical and Chemical Changes in Food : physical and chemical changes that you can observe in your own kitchen! Do you know everything about protons? Are Properties and Structures of Subatomic Particles: you positive? Chemistry is pretty sweet. Also tasty if you Recognizing Redox Reactions: understand oxidation and reduction reactions, but it may take a little MacGyvering. Learn more about the atomic model and The Discovery and Behavior of Antimatter: antimatter! Teaching Idea Name Description This PBS/NOVA presentation tells the story of the CERN and the Large Hadron Collider project - an amazing ongoing CERN: investigation in search of an answer to the mysteries that still exist in particle physics. Recommended discussions and activities before and after the video are provided. A video and supporting activities about the Periodic Table. Island of Stability: The context is man's quest to create elements. The focus is atomic structure and atomic theory. This resource describes activity that will allow students to observe the effects of a chemical change as opposed to a physical change. It also gives them the opportunity to observe conservation of matter by modeling chemical Recognizing Chemical Reactions: equations. The main learning objective is the recognition that all chemical reactions create new molecules and that in a chemical reaction the original atoms get rearranged, bonding together in different ways. Students conduct and observe a chemical reaction in a sealable plastic bag. Students then devise and conduct their Zip-lock Bag Reactions: own experiments to determine the identity of two unknown substances used in the reaction. Perspectives Video: Teaching Idea Name Description Listen to this chemist describe a simple pH indicator experiment DIY Cabbage Juice pH Indicator: using foods and household chemicals. A National Board Certified Teacher and Presidential Awardee for outstanding math and science teaching Halogens, Halides, and Redox Reactions: demonstrates a hands-on laboratory activity series to see which halogen/halide combinations will result in redox reactions. Orange. Blue. Wait, orange. The Briggs-Rauscher Reaction is a Redox Reaction in Action!: No, wait, blue. Chemistry! WebQuest Name Description This jigsaw activity is designed as a cooperative learning activity used to introduce the idea of intermolecular forces. Intermolecular forces are the types of attractive forces that occur between Intermolecular Forces: A Jigsaw Activity: molecules in a solid, liquid, or gas. Each force causes different physical properties of matter. Each member of the group will become an expert on one type of force and then teach the rest of the group. Unit/Lesson Sequence Name Description Students look more deeply into the structure of the atom and play a game to better understand the Middle School Chemistry Unit | Chapter 4 | The Periodic Table & Bonding: relationship between protons, neutrons, electrons, and energy levels in atoms and their location in the periodic table. Students will also explore covalent and ionic bonding. Presentation/Slideshow Name Description Ernest Rutherford publishes his atomic theory describing the atom as having a central positive nucleus surrounded by Rutherford's Gold Foil Experiment: negative orbiting electrons. This model suggested that most of the mass of the atom was contained in the small nucleus, and that the rest of the atom was mostly empty space. Student Resources Title A Moment on Dipole-Dipole Forces: Description Learn how molecules have the potential to be polar, but not all are. How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution. Some of the topics to investigate: Acid-Base Solutions: Given acids or bases at the same concentration, demonstrate understanding of acid and base strength by 1. Relating the strength of an acid or base to the extent to which it dissociates in water. 2. Identifying all the molecules and ions that are present in a given acid or base solution. 3. Comparing the relative concentrations of molecules and ions in weak versus strong acid (or base) solutions. 4. Describing the similarities and differences between strong acids and weak acids or strong bases and weak bases. American Elements: Atom Builder: Atomic Interactions: Demonstrate understanding of solution concentrated by: 1. Describing the similarities and differences between concentrated and dilute solutions. 2. Comparing the concentrations of all molecules and ions in concentrated versus dilute solutions of a particular acid or base. Describe how common tools (pH meter, conductivity, pH paper) help identify whether a solution is an acid or base and strong or weak and concentrated or dilute. This web site features an interactive periodic chart that provides information on the elements, including a description, physical and thermal properties, abundance, isotopes, ionization energy, the element's discoverer, translations of element names into several languages, and bibliographic information on research-and-development publications involving the element. Additional information includes technical information and information on manufactured products for elemental metals, metallic compounds, and ceramic and crystalline products. The American Elements company manufactures engineered and advanced material products. This is a virtual manipulative that students may use to construct various atoms up to carbon by creating protons and neutrons from up and down quarks and adding electrons. Students are challenged to keep the electrical charge of the atom neutral and to ensure the imbalance between protons and neutrons doesn't become great enough to result in radioactive decay! In this simulation, explore the interactions between various combinations of two atoms. Specific features of the simulation allows you to see either the total force acting on the atoms or the individual attractive and repulsive forces. Options for learning: Atoms and Bonding: This tutorial will help the learner understand the relationship between atoms, their electrons, and the chemical bonds they can form. This activity will allow you to practice balancing a chemical equation. You will have to make sure you are following the law of conservation of mass and recognize what can change to balance an equation. You can: Balancing Chemical Equations: Explain how attractive and repulsive forces govern the interaction between atoms. Describe the effect of potential well depth on atomic interactions. Describe the process of bonding between atoms in terms of energy. Balance a chemical equation. Recognize that the number of atoms of each element is conserved in a chemical reaction. Describe the difference between coefficients and subscripts in a chemical equation. Translate from symbolic to molecular representation. An assessment activity is included below. Click to Run This activity will allow you to make colorful concentrated and dilute solutions and explore how much light they absorb and transmit using a virtual spectrophotometer. You can explore concepts in many ways including: Beer's Law Lab: Describe the relationships between volume and amount of solute to solution concentration. Explain qualitatively the relationship between solution color and concentration. Predict and explain how solution concentration will change for adding or removing: water, solute, and/or solution. Calculate the concentration of solutions in units of molarity (mol/L). Design a procedure for creating a solution of a given concentration. Identify when a solution is saturated and predict how concentration will change for adding or removing: water, solute, and/or solution. Describe the relationship between the solution concentration and the intensity of light that is absorbed/transmitted. Describe the relationship between absorbance, molar absorptivity, path length, and concentration in Beer's Law. Predict how the intensity of light absorbed/transmitted will change with changes in solution type, solution concentration, container width, or light source and explain why? Build an Atom: Climate Connections Global Warming: All about Carbon: Compounds: Acids and bases: Concentration: Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas! This is a video series that explains (introduces) properties of the carbon atom and parts of the carbon cycle. The video is entertaining and highly relevant for content. This resource is an interactive video that compares and contrasts acids and bases while showing properties and interactions. Explain the concept of concentration Explain the effect of concentration changes on colors of solutions Demonstrate the effect of changing the amount of solute, or solvent, or both on the concentration of the solution Identify a saturated solution This simulation will provide the learners with a chance to increase their understanding of a molecular shape. The learners will be required to follow a "Lewis dot structure" which involves two basic principles: Create Molecular Shape: Electron Configurations: 1. The shapes of the molecule is determined by the repulsion between electron pairs in the outer shell of the central atom. Both bond pairs and lone pairs must be considered. 2. Lone pairs repel more than bond pairs. The electron configuration of an atom is the representation of the arrangement of electrons that are distributed among the orbital shells and subshells. The simulated activity will help the learners practice the arrangement of the electrons. The learners will be required to follow rules in order to correctly divide the electrons in the orbitals based on the valency of the atom. Element Math Game: Students determine the number of protons, electrons, neutrons, and nucleons for different atoms Students will pump gas molecules to a box and see what happens as they change the volume, add or remove heat, change gravity, and more. Measure the temperature and pressure, and discover how the properties of the gas vary in relation to each other. Gas Properties: Hydrogen Bonding Force: Introduction to Metabolism: Making Charcoal: Models of the Hydrogen Atom Simulation: Students can predict how changing a variable among pressure, volume, temperature and number influences other gas properties. Students can predict how changing temperature will affect the speed of molecules. Students can rank the speed of molecules in thermal equilibrium based on the relative masses of molecules. A hydrogen bond is the electromagnetic attractive interaction between polar molecules in which hydrogen is bound to a highly electronegative atom, such as nitrogen, oxygen, or fluorine. This tutorial will help the learner understand how hydrogen bonds form between the molecules. An organism must maintain its cellular organization and internal equilibrium despite the external force that act upon it. Cells take in nutrients as duel to support their constant fight against a chaotic, disordered world. This tutorial will help the learners to understand the process of metabolism. Get sooted up and join a collier as he discusses charcoal production at historic Mission San Luis. How did scientists figure out the structure of atoms without looking at them? Try out different models by shooting light at the atom. Check how the prediction of the model matches the experimental results. Oxidation and Reduction in Cellular Respiration: Oxidation and Reduction Review From Biological Point-of-View: Periodic Table: pH Scale: pH Scale: Physical and Chemical Changes in Food : Precipitation Reaction Systems: Properties and Structures of Subatomic Particles: Recognizing Redox Reactions: Rutherford Scattering: This video explains oxidation and reduction in cellular respiration. This Khan Academy video explains oxidation and reduction reactions from a biological point of view. This unique periodic table presents the elements in an interesting visual display. Select an element to find an image of the element, a description, history, and even an animation. Other chemical data is linked as a PDF file (requires Acrobat Reader). Students can test the pH of several substances and visualize hydronium, hydroxide, and water molecules in solution by concentration or the number of molecules. Students can add water to a given substance to see the effects it will have on the pH of that substance; or they can create their own custom substance. Keep an eye on pH as you learn about what makes acids and bases. Don't overreact when this chemist describes physical and chemical changes that you can observe in your own kitchen! Precipitation reactions occur when cations and anions of aqueous solutions combine to form an insoluble ionic solid, called a precipitate. This simulation explores systems for which precipitation reactions are possible.A precipitation reaction is controlled by the magnitude of the solubility product, solubility product constant and the concentrations of the ions in solution. Do you know everything about protons? Are you positive? Chemistry is pretty sweet. Also tasty if you understand oxidation and reduction reactions, but it may take a little MacGyvering. This virtual manipulative will help you investigate how Rutherford figured out the structure of the atom without being able to see it. This simulation will allow the you to explore the famous experiment in which Rutherford disproved the Plum Pudding model of the atom by observing alpha particles bouncing off atoms and determining that they must have a small core. Further explorations of the tutorial could include: Rutherford's Gold Foil Experiment: Science Crossword Puzzles: See the Four States of Matter in Welding!: Shapes of Molecules: States of Matter: Describe the qualitative difference between scattering off positively charged nuclei and electrically neutral plum pudding atoms. For a charged nucleus, describe qualitatively how angle of deflection depends on: energy of incoming particle, impact parameters, and charge of target. Ernest Rutherford publishes his atomic theory describing the atom as having a central positive nucleus surrounded by negative orbiting electrons. This model suggested that most of the mass of the atom was contained in the small nucleus, and that the rest of the atom was mostly empty space. A collection of crossword puzzles that test the knowledge of students about some of the terms, processes, and classifications covered in science topics A welder wields a plasma torch to cut solid metal like a hot knife through butter. It's onestop shopping to see all four states of matter. Differentiate between electron pair and molecular geometry Learn how to name electron pair and molecular geometries for molecules with up to six electron groups around the central atom Illustrate how electron pair repulsion affects bond angles Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. The Discovery and Behavior of Antimatter: Titrations: Under Pressure: Learn more about the atomic model and antimatter! This virtual manipulative will help you understand the process of titration, which is a neutralization reaction that is performed in order to determine an unknown concentration of acid and base. With this simulation, you will be able to calculate the moles of the acid with the understanding that the moles of acid will be equal to the moles of base at the equivalence point. Explore pressure under and above water. See how pressure changes as one change fluids, gravity, container shapes, and volume. With this simulation you can: Investigate how pressure changes in air and water. Discover how to change pressure. Predict pressure in a variety of situations. Understanding molecular polarity by changing the electron-negativity of atoms in a molecule to see how it affects polarity. See how the molecule behaves in an electric field. Change the bond angle to see how shape affects polarity. See how it works for real molecules in 3D. Understanding Polarity: Water: Parent Resources Some learning goals: •predict bond polarity using electronnegativity values •indicate polarity with a polar arrow or partial charges •rank bonds in order of polarity •predict molecular polarity using bond polarity and molecular shape This tutorial will help the learners to understand the molecular structure of the water molecule, its inter- and intra-molecular bonds, and the formation of hydroxide ions. Title A Moment on Dipole-Dipole Forces: Description Learn how molecules have the potential to be polar, but not all are. How do strong and weak acids differ? Use lab tools on your computer to find out! Dip the paper or the probe into solution to measure the pH, or put in the electrodes to measure the conductivity. Then see how concentration and strength affect pH. Can a weak acid solution have the same pH as a strong acid solution. Some of the topics to investigate: Acid-Base Solutions: Atomic Interactions: Given acids or bases at the same concentration, demonstrate understanding of acid and base strength by 1. Relating the strength of an acid or base to the extent to which it dissociates in water. 2. Identifying all the molecules and ions that are present in a given acid or base solution. 3. Comparing the relative concentrations of molecules and ions in weak versus strong acid (or base) solutions. 4. Describing the similarities and differences between strong acids and weak acids or strong bases and weak bases. Demonstrate understanding of solution concentrated by: 1. Describing the similarities and differences between concentrated and dilute solutions. 2. Comparing the concentrations of all molecules and ions in concentrated versus dilute solutions of a particular acid or base. Describe how common tools (pH meter, conductivity, pH paper) help identify whether a solution is an acid or base and strong or weak and concentrated or dilute. In this simulation, explore the interactions between various combinations of two atoms. Specific features of the simulation allows you to see either the total force acting on the atoms or the individual attractive and repulsive forces. Options for learning: Balancing Act: Explain how attractive and repulsive forces govern the interaction between atoms. Describe the effect of potential well depth on atomic interactions. Describe the process of bonding between atoms in terms of energy. This activity allows students to practice balancing chemical equations. It has three difficulty levels, and the students can practice with 5, 10, or 15 questions. This activity will allow you to practice balancing a chemical equation. You will have to make sure you are following the law of conservation of mass and recognize what can change to balance an equation. You can: Balancing Chemical Equations: Balance a chemical equation. Recognize that the number of atoms of each element is conserved in a chemical reaction. Describe the difference between coefficients and subscripts in a chemical equation. Translate from symbolic to molecular representation. An assessment activity is included below. Click to Run This activity will allow you to make colorful concentrated and dilute solutions and explore how much light they absorb and transmit using a virtual spectrophotometer. You can explore concepts in many ways including: Beer's Law Lab: Describe the relationships between volume and amount of solute to solution concentration. Explain qualitatively the relationship between solution color and concentration. Predict and explain how solution concentration will change for adding or removing: water, solute, and/or solution. Calculate the concentration of solutions in units of molarity (mol/L). Design a procedure for creating a solution of a given concentration. Identify when a solution is saturated and predict how concentration will change for adding or removing: water, solute, and/or solution. Describe the relationship between the solution concentration and the Climate Connections Global Warming: All about Carbon: Compounds, Molecules and the Mole: Concentration: intensity of light that is absorbed/transmitted. Describe the relationship between absorbance, molar absorptivity, path length, and concentration in Beer's Law. Predict how the intensity of light absorbed/transmitted will change with changes in solution type, solution concentration, container width, or light source and explain why? This is a video series that explains (introduces) properties of the carbon atom and parts of the carbon cycle. The video is entertaining and highly relevant for content. The relationship of numbers of particles on the atomic scale to measurements made on the bulk scale uses the concept of the mole. Using this simulation, the learner will be able to explore the relationship between mass, moles, molecules and atoms. Explain the concept of concentration Explain the effect of concentration changes on colors of solutions Demonstrate the effect of changing the amount of solute, or solvent, or both on the concentration of the solution Identify a saturated solution This simulation will provide the learners with a chance to increase their understanding of a molecular shape. The learners will be required to follow a "Lewis dot structure" which involves two basic principles: Create Molecular Shape: 1. The shapes of the molecule is determined by the repulsion between electron pairs in the outer shell of the central atom. Both bond pairs and lone pairs must be considered. 2. Lone pairs repel more than bond pairs. DIY Cabbage Juice pH Indicator: Electron Configurations: Listen to this chemist describe a simple pH indicator experiment using foods and household chemicals. The electron configuration of an atom is the representation of the arrangement of electrons that are distributed among the orbital shells and subshells. The simulated activity will help the learners practice the arrangement of the electrons. The learners will be required to follow rules in order to correctly divide the electrons in the orbitals based on the valency of the atom. Students will pump gas molecules to a box and see what happens as they change the volume, add or remove heat, change gravity, and more. Measure the temperature and pressure, and discover how the properties of the gas vary in relation to each other. Gas Properties: Halogens, Halides, and Redox Reactions: Limiting Reactants: Students can predict how changing a variable among pressure, volume, temperature and number influences other gas properties. Students can predict how changing temperature will affect the speed of molecules. Students can rank the speed of molecules in thermal equilibrium based on the relative masses of molecules. A National Board Certified Teacher and Presidential Awardee for outstanding math and science teaching demonstrates a hands-on laboratory activity series to see which halogen/halide combinations will result in redox reactions. This virtual manipulative will help the learners to recognize the limiting reactant effect in a reaction. Limiting reactants can be explained from the extent to which reactions that involve more than one reactant can Making Charcoal: pH Scale: Physical and Chemical Changes in Food : Precipitation Reaction Systems: Properties and Structures of Subatomic Particles: Recognizing Redox Reactions: Rutherford Scattering: produce products depends on the quantities of those reactants combined. In most cases, one reactant will be totally consumed while the other reactants remain in excess. Get sooted up and join a collier as he discusses charcoal production at historic Mission San Luis. Keep an eye on pH as you learn about what makes acids and bases. Don't overreact when this chemist describes physical and chemical changes that you can observe in your own kitchen! Precipitation reactions occur when cations and anions of aqueous solutions combine to form an insoluble ionic solid, called a precipitate. This simulation explores systems for which precipitation reactions are possible.A precipitation reaction is controlled by the magnitude of the solubility product, solubility product constant and the concentrations of the ions in solution. Do you know everything about protons? Are you positive? Chemistry is pretty sweet. Also tasty if you understand oxidation and reduction reactions, but it may take a little MacGyvering. This virtual manipulative will help you investigate how Rutherford figured out the structure of the atom without being able to see it. This simulation will allow the you to explore the famous experiment in which Rutherford disproved the Plum Pudding model of the atom by observing alpha particles bouncing off atoms and determining that they must have a small core. Further explorations of the tutorial could include: Describe the qualitative difference between scattering off positively charged nuclei and electrically neutral plum pudding atoms. For a charged nucleus, describe qualitatively how angle of deflection depends on: energy of incoming particle, impact parameters, and charge of target. See the Four States of Matter in Welding!: Shapes of Molecules: The Briggs-Rauscher Reaction is a Redox Reaction in Action!: The Discovery and Behavior of Antimatter: Titrations: Under Pressure: A welder wields a plasma torch to cut solid metal like a hot knife through butter. It's onestop shopping to see all four states of matter. Differentiate between electron pair and molecular geometry Learn how to name electron pair and molecular geometries for molecules with up to six electron groups around the central atom Illustrate how electron pair repulsion affects bond angles Orange. Blue. Wait, orange. No, wait, blue. Chemistry! Learn more about the atomic model and antimatter! This virtual manipulative will help you understand the process of titration, which is a neutralization reaction that is performed in order to determine an unknown concentration of acid and base. With this simulation, you will be able to calculate the moles of the acid with the understanding that the moles of acid will be equal to the moles of base at the equivalence point. Explore pressure under and above water. See how pressure changes as one change fluids, gravity, container shapes, and volume. With this simulation you can: Understanding Polarity: Investigate how pressure changes in air and water. Discover how to change pressure. Predict pressure in a variety of situations. Understanding molecular polarity by changing the electron-negativity of atoms in a molecule to see how it affects polarity. See how the molecule behaves in an electric field. Change the bond angle to see how shape affects polarity. See how it works for real molecules in 3D. Water: Some learning goals: •predict bond polarity using electronnegativity values •indicate polarity with a polar arrow or partial charges •rank bonds in order of polarity •predict molecular polarity using bond polarity and molecular shape This tutorial will help the learners to understand the molecular structure of the water molecule, its inter- and intra-molecular bonds, and the formation of hydroxide ions.