2003
... Justify your answer by including working. (2 marks) According to the criterion set, the oil well will not be economically productive. Percentage of B = ...
... Justify your answer by including working. (2 marks) According to the criterion set, the oil well will not be economically productive. Percentage of B = ...
PowerPoint material for lecture 1 (September 4, 2012)
... • Colloids: A mixture of much larger particles ranging from 20 nm to 100 μm. Milk and paint are examples of colloids. • Grains: Some materials are made up of many small crystals called grains. A grain is an individual crystal of such a solid. Different grains may have the crystal lattice oriented in ...
... • Colloids: A mixture of much larger particles ranging from 20 nm to 100 μm. Milk and paint are examples of colloids. • Grains: Some materials are made up of many small crystals called grains. A grain is an individual crystal of such a solid. Different grains may have the crystal lattice oriented in ...
6.7 – Ionic Compounds
... Properties of Ionic Compounds – Most ionic compounds are crystalline solids at room temperature. Ionic attractions result in high melting points. Most ionic compounds can dissolve in water to become an aqueous solution with ions that are free to move around. Therefore, ionic compounds do not conduct ...
... Properties of Ionic Compounds – Most ionic compounds are crystalline solids at room temperature. Ionic attractions result in high melting points. Most ionic compounds can dissolve in water to become an aqueous solution with ions that are free to move around. Therefore, ionic compounds do not conduct ...
Chapter 3
... – identity of reactants [R] and products [P]; use study of nomenclature to write equations – Identify the state of matter for each [R] and [P] – identify reaction type ...
... – identity of reactants [R] and products [P]; use study of nomenclature to write equations – Identify the state of matter for each [R] and [P] – identify reaction type ...
Summer Assignment for AP Chemistry: I hope you are all ready for a
... 1, but AP Chem will be a little different. Rather than just memorizing how to do particular types of problems, you must instead really understand the chemistry behind each process and be able to apply it to all sorts of different situations. Students who finish AP Chemistry come out with a better un ...
... 1, but AP Chem will be a little different. Rather than just memorizing how to do particular types of problems, you must instead really understand the chemistry behind each process and be able to apply it to all sorts of different situations. Students who finish AP Chemistry come out with a better un ...
Periodicity - Teach-n-Learn-Chem
... Relate the properties of various elements to their electron configurations. FAMILIES OF ELEMENTS Dimitri Mendeleev invented the periodic table ...
... Relate the properties of various elements to their electron configurations. FAMILIES OF ELEMENTS Dimitri Mendeleev invented the periodic table ...
Chemistry - CBSE Academic
... The new and updated curriculum is based on disciplinary approach with rigour and depth taking care that the syllabus is not heavy and at the same time it is comparable to the international level. The knowledge related to the subject of Chemistry has undergone tremendous changes during the past one d ...
... The new and updated curriculum is based on disciplinary approach with rigour and depth taking care that the syllabus is not heavy and at the same time it is comparable to the international level. The knowledge related to the subject of Chemistry has undergone tremendous changes during the past one d ...
The Chemical Context of Life
... • A molecule consists of two or more atoms held together by covalent bonds • A single covalent bond, or single bond, is the sharing of one pair of valence electrons ...
... • A molecule consists of two or more atoms held together by covalent bonds • A single covalent bond, or single bond, is the sharing of one pair of valence electrons ...
IPC – First Semester Exam Review Be able to classify an example
... Why elements are placed in a specific group (column) on the PTOE o Elements in the same vertical group have the same number of valence electrons (very outside electrons) o Valence electrons determine an element’s reactivity Elements in the same group have similar reactivity since they have the ...
... Why elements are placed in a specific group (column) on the PTOE o Elements in the same vertical group have the same number of valence electrons (very outside electrons) o Valence electrons determine an element’s reactivity Elements in the same group have similar reactivity since they have the ...
Polyatomic Ions (Memorize for Wednesday, January 31
... Oxidation Numbers (similar to valence electrons) Group 1 = +1 Group 2 = +2 Groups 13-18 = group # - 10 for most elements d-block elements must be looked up (groups 3-12 use roman numerals) oxidation numbers for ALL compounds MUST equal zero Metal-Non-metal (binary ionic compounds, only 2 elements) M ...
... Oxidation Numbers (similar to valence electrons) Group 1 = +1 Group 2 = +2 Groups 13-18 = group # - 10 for most elements d-block elements must be looked up (groups 3-12 use roman numerals) oxidation numbers for ALL compounds MUST equal zero Metal-Non-metal (binary ionic compounds, only 2 elements) M ...
ch14 lecture 7e
... • N gains 3 electrons to form the anion N3-, but only in compounds with active metals. • The higher elements in the group are metallic and lose electrons to form cations. • Oxides change from acidic to amphoteric to basic as you move down the group. • All Group 5A(15) elements form gaseous hydrides ...
... • N gains 3 electrons to form the anion N3-, but only in compounds with active metals. • The higher elements in the group are metallic and lose electrons to form cations. • Oxides change from acidic to amphoteric to basic as you move down the group. • All Group 5A(15) elements form gaseous hydrides ...
How to balance chemical equations File
... A law in chemistry, the Law of Conservation of Mass, states, “In an ordinary chemical reaction, matter is neither created nor destroyed.” This means that you have neither gained nor lost any atoms during the reaction. They may be combined differently, but they’re still there. A chemical equation rep ...
... A law in chemistry, the Law of Conservation of Mass, states, “In an ordinary chemical reaction, matter is neither created nor destroyed.” This means that you have neither gained nor lost any atoms during the reaction. They may be combined differently, but they’re still there. A chemical equation rep ...
Silicon vs. Carbon - Coristines
... *Electronegativity describes the ability of an atom to attract electrons towards itself in a covalent bond. An atom's electronegativity is affected by both its atomic weight and the distance that its valence electrons are from the nucleus. The higher the electronegativity number, the more an element ...
... *Electronegativity describes the ability of an atom to attract electrons towards itself in a covalent bond. An atom's electronegativity is affected by both its atomic weight and the distance that its valence electrons are from the nucleus. The higher the electronegativity number, the more an element ...
Balancing Equations
... 1. Word Equations—Show the names of reactants and products. Example: Sodium + Chlorine Sodium chloride 2. Chemical equations—Show the formulas of reactants and products. Example: Na + Cl2 NaCl (Not Balanced Yet!) 3. Skeleton equations—Equations that are not yet balanced to represent what actuall ...
... 1. Word Equations—Show the names of reactants and products. Example: Sodium + Chlorine Sodium chloride 2. Chemical equations—Show the formulas of reactants and products. Example: Na + Cl2 NaCl (Not Balanced Yet!) 3. Skeleton equations—Equations that are not yet balanced to represent what actuall ...
UNIT 7 – CHEMICAL REACTIONS
... 1. A ________________________ is simply a chemical change. It is the process by which one or more substances are changed into one or more different substances. 2. The original substances are known as ____________________ while the resulting substances are called ____________________. 3. Evidence of ...
... 1. A ________________________ is simply a chemical change. It is the process by which one or more substances are changed into one or more different substances. 2. The original substances are known as ____________________ while the resulting substances are called ____________________. 3. Evidence of ...
Dr. Ali Ebneshahidi © 2016 Ebneshahidi
... Organic chemistry – chemistry that deals with organic substances (those that contain carbon and hydrogen). Biochemistry - chemistry of living organisms; essential for understanding physiology because body functions involve chemical changes that occur within cells. Matter – anything that has we ...
... Organic chemistry – chemistry that deals with organic substances (those that contain carbon and hydrogen). Biochemistry - chemistry of living organisms; essential for understanding physiology because body functions involve chemical changes that occur within cells. Matter – anything that has we ...
E:\My Documents\sch3u\SCH3Ureview.wpd
... 12) a) Draw a Lewis dot diagram for a typical atom in the Oxygen family of elements. b) What is the typical ionic charge of these atoms. c) Explain why all the atoms in this family form stable ions with this charge. 13) The Alkali Metals are a very reactive family of metals. a) Explain what happens ...
... 12) a) Draw a Lewis dot diagram for a typical atom in the Oxygen family of elements. b) What is the typical ionic charge of these atoms. c) Explain why all the atoms in this family form stable ions with this charge. 13) The Alkali Metals are a very reactive family of metals. a) Explain what happens ...
PHYSICAL SETTING CHEMISTRY
... may require the use of the Reference Tables for Physical Setting/Chemistry. Base your answers to questions 66 through 68 on the information below. In the early 1800s, John Dalton proposed an atomic theory that was based on experimental observations made by several scientists. Three concepts of Dalto ...
... may require the use of the Reference Tables for Physical Setting/Chemistry. Base your answers to questions 66 through 68 on the information below. In the early 1800s, John Dalton proposed an atomic theory that was based on experimental observations made by several scientists. Three concepts of Dalto ...
AP Semester I Review: Free Response Questions
... The structures of a water molecule and a crystal of LiCl(s) are represented above. A student prepares a 1.0 M solution by dissolving 4.2 g of LiCl(s) in enough water to make 100 mL of solution. a. In the space provided below, show the interactions of the components of LiCl(aq) by making a drawing th ...
... The structures of a water molecule and a crystal of LiCl(s) are represented above. A student prepares a 1.0 M solution by dissolving 4.2 g of LiCl(s) in enough water to make 100 mL of solution. a. In the space provided below, show the interactions of the components of LiCl(aq) by making a drawing th ...
AP Chap 2
... The Energy Levels of Electrons • Energy is the capacity to cause change • Potential energy is the energy that matter has because of its location or structure • The electrons of an atom differ in their amounts of potential energy • An electron’s state of potential energy is called its energy level, ...
... The Energy Levels of Electrons • Energy is the capacity to cause change • Potential energy is the energy that matter has because of its location or structure • The electrons of an atom differ in their amounts of potential energy • An electron’s state of potential energy is called its energy level, ...
History of chemistry
The history of chemistry represents a time span from ancient history to the present. By 1000 BC, civilizations used technologies that would eventually form the basis to the various branches of chemistry. Examples include extracting metals from ores, making pottery and glazes, fermenting beer and wine, extracting chemicals from plants for medicine and perfume, rendering fat into soap, making glass, and making alloys like bronze.The protoscience of chemistry, alchemy, was unsuccessful in explaining the nature of matter and its transformations. However, by performing experiments and recording the results, alchemists set the stage for modern chemistry. The distinction began to emerge when a clear differentiation was made between chemistry and alchemy by Robert Boyle in his work The Sceptical Chymist (1661). While both alchemy and chemistry are concerned with matter and its transformations, chemists are seen as applying scientific method to their work.Chemistry is considered to have become an established science with the work of Antoine Lavoisier, who developed a law of conservation of mass that demanded careful measurement and quantitative observations of chemical phenomena. The history of chemistry is intertwined with the history of thermodynamics, especially through the work of Willard Gibbs.