Name: Date: Period: _____ Unit 2 Notes, Part 1 – The Basics of
... organisms and non-living things are made up of matter. 2. Atoms are the smallest unit of matter. Each different type of atom represents an element (ex: hydrogen, oxygen, carbon). Scientists have created a chart called the periodic table of elements to organize elements by their atomic properties. 3. ...
... organisms and non-living things are made up of matter. 2. Atoms are the smallest unit of matter. Each different type of atom represents an element (ex: hydrogen, oxygen, carbon). Scientists have created a chart called the periodic table of elements to organize elements by their atomic properties. 3. ...
Matter, Mass and Weight
... Elements are substances that cannot be decomposed into simpler substances by physical or chemical means. Like all pure substances, it has its own set of physical and chemical properties. At room temperature, 75 elements are solids, 11 are gases, 2 (mercury and bromine) are liquids. Each element is r ...
... Elements are substances that cannot be decomposed into simpler substances by physical or chemical means. Like all pure substances, it has its own set of physical and chemical properties. At room temperature, 75 elements are solids, 11 are gases, 2 (mercury and bromine) are liquids. Each element is r ...
What is Matter PowerPoint
... Pure Substances • Element- the simplest form of matter • Made up of only one type of atom • 92 naturally occurring elements • Examples: gold, silver, oxygen, mercury ...
... Pure Substances • Element- the simplest form of matter • Made up of only one type of atom • 92 naturally occurring elements • Examples: gold, silver, oxygen, mercury ...
Chapter 4 Spectroscopy
... produces continuous spectrum • Low-density hot gas produces emission spectrum • Continuous spectrum incident on cool, thin gas produces absorption spectrum ...
... produces continuous spectrum • Low-density hot gas produces emission spectrum • Continuous spectrum incident on cool, thin gas produces absorption spectrum ...
Unit Two Objectives
... Describe the various models in the historical development of modern atomic theory: a. Aristotle: Matter is made of Air, Fire, Earth, & Water. b. Democritus: The first to say that matter is composed of atom, or “atomos.” c. Dalton: Had five basic principles in his model of the atom d. Thomson: discov ...
... Describe the various models in the historical development of modern atomic theory: a. Aristotle: Matter is made of Air, Fire, Earth, & Water. b. Democritus: The first to say that matter is composed of atom, or “atomos.” c. Dalton: Had five basic principles in his model of the atom d. Thomson: discov ...
Chemistry Final Test 1999-2000 - Nashoba Valley Technical High
... Quiz a friend over the material and practice explaining topics to each other. DO NOT look at the answers until you have tried the problems! If you get stuck DO NOT look at the answers until you have tried as hard to get yourself unstuck as you would try in the real exam. Rewrite your notes and ...
... Quiz a friend over the material and practice explaining topics to each other. DO NOT look at the answers until you have tried the problems! If you get stuck DO NOT look at the answers until you have tried as hard to get yourself unstuck as you would try in the real exam. Rewrite your notes and ...
- Catalyst
... 4. The ____________________________ of an element has the units g/mole. 5. Smallest unit of an element is a(n) _________________________________. 6. The __________________________ of an element is one or two letters found on the periodic table. 7. Isotopes have the same number of ____________ ...
... 4. The ____________________________ of an element has the units g/mole. 5. Smallest unit of an element is a(n) _________________________________. 6. The __________________________ of an element is one or two letters found on the periodic table. 7. Isotopes have the same number of ____________ ...
MATTER-Ch. 3-homogeneous vs. heterogeneous, elements
... ratios. This evidence supports the law of a. conservation of mass. c. definite composition. b. multiple proportions. d. mass action. ____ 17. According to the law of conservation of mass, when sodium, hydrogen, and oxygen react to form a compound, the mass of the compound is ____ the sum of the mass ...
... ratios. This evidence supports the law of a. conservation of mass. c. definite composition. b. multiple proportions. d. mass action. ____ 17. According to the law of conservation of mass, when sodium, hydrogen, and oxygen react to form a compound, the mass of the compound is ____ the sum of the mass ...
Chemical Reactions and Stoichiometry
... Indicators of a Chemical Reaction – evidence of a chemical reaction a. Evolution of heat and light (simultaneously) b. Production of a gas (bubbles, odor change) c. Formation of a precipitate (solid, cloudy) d. Color change (not introduced by an outside source such as dye or ink) Characteristics of ...
... Indicators of a Chemical Reaction – evidence of a chemical reaction a. Evolution of heat and light (simultaneously) b. Production of a gas (bubbles, odor change) c. Formation of a precipitate (solid, cloudy) d. Color change (not introduced by an outside source such as dye or ink) Characteristics of ...
Ink and paper
... blood the red color. In addition to being responsible for the transfer of oxygen from the lungs to the various tissues of the body and its cells. Studies indicated that two out of five people suffer from iron deficiency . This leads to anemia and lack of focus , tired, pallor, especially in women. ...
... blood the red color. In addition to being responsible for the transfer of oxygen from the lungs to the various tissues of the body and its cells. Studies indicated that two out of five people suffer from iron deficiency . This leads to anemia and lack of focus , tired, pallor, especially in women. ...
Semester 1 Study Guide – Chemistry
... meaning that only certain discrete energy levels are allowed. ...
... meaning that only certain discrete energy levels are allowed. ...
12-3: Lewis Structures
... around the chemical symbol All atoms want to achieve a noble gas configuration o Octet Rule—most elements will be surrounded by 8 dots, representing noble gas configuration Hydrogen is full with 2 electrons (2 dots on one side)—so it is like helium Draw the Lewis structures for: H Ca N F ...
... around the chemical symbol All atoms want to achieve a noble gas configuration o Octet Rule—most elements will be surrounded by 8 dots, representing noble gas configuration Hydrogen is full with 2 electrons (2 dots on one side)—so it is like helium Draw the Lewis structures for: H Ca N F ...
Chemical Reactions are…
... The copper-covered Statue of Liberty has stood in upper New York Bay for more than a 100 years. The green color of the Statue of Liberty comes from a change to the statues copper metal covering. These changes are a result from chemical reactions. ...
... The copper-covered Statue of Liberty has stood in upper New York Bay for more than a 100 years. The green color of the Statue of Liberty comes from a change to the statues copper metal covering. These changes are a result from chemical reactions. ...
Glossary
... of the component parts of the object when the object is translated, rotated and/or reflected. Thermochemistry − study of heat attending chemical reactions. Transmutation − a change, specifically refers to changing one substance or element into another. True molecular formula − a multiple of an empir ...
... of the component parts of the object when the object is translated, rotated and/or reflected. Thermochemistry − study of heat attending chemical reactions. Transmutation − a change, specifically refers to changing one substance or element into another. True molecular formula − a multiple of an empir ...
ch22 lecture 7e
... from the atmosphere, where they occur as the free elements. A few elements occur naturally in their uncombined (native) state. These include S, carbon in coal, and unreactive metals. ...
... from the atmosphere, where they occur as the free elements. A few elements occur naturally in their uncombined (native) state. These include S, carbon in coal, and unreactive metals. ...
Stoichiometry and Balanced Reactions Chemical Accounting
... Chemical Accounting • Reactions are balanced on a per-molecule (or per-atom) basis – But individual molecules are fairly impractical to handle! – Fortunately, stoichiometric ratios apply for larger numbers of molecules (dozens, hundreds, millions…and more – In the laboratory, it is more practical to ...
... Chemical Accounting • Reactions are balanced on a per-molecule (or per-atom) basis – But individual molecules are fairly impractical to handle! – Fortunately, stoichiometric ratios apply for larger numbers of molecules (dozens, hundreds, millions…and more – In the laboratory, it is more practical to ...
A = 27
... atom, however one or more must be at a higher energy level (outermost shell) that the ground state of the periodic table ( for Al it is 2-8-3), 13 electrons.The ans is 1) 2-7-4 (13 e-), one electron promoted from shell 2 to shell 3. #34) non-metals are brittle non conductors. This cannot be METALLIC ...
... atom, however one or more must be at a higher energy level (outermost shell) that the ground state of the periodic table ( for Al it is 2-8-3), 13 electrons.The ans is 1) 2-7-4 (13 e-), one electron promoted from shell 2 to shell 3. #34) non-metals are brittle non conductors. This cannot be METALLIC ...
Final Exam Practice Problems Set 2
... Which one of the following is not one of the postulates of Dalton’s atomic theory? 1) Atoms are composed of protons, neutrons, and electrons. 2) All atoms of a given element are identical; the atoms of different elements are different and have different properties. 3) Atoms of an element are not cha ...
... Which one of the following is not one of the postulates of Dalton’s atomic theory? 1) Atoms are composed of protons, neutrons, and electrons. 2) All atoms of a given element are identical; the atoms of different elements are different and have different properties. 3) Atoms of an element are not cha ...
Chapter 15 - cloudfront.net
... The Law of Conservation of Mass • The mass of all substances present before a chemical ...
... The Law of Conservation of Mass • The mass of all substances present before a chemical ...
Using mass to calculate molecular formula
... Empirical formula and Molecular formula Benzene consists of 7.69% H and 92.31%C. Converting this to a formula gives CH. This is the simplest integer ratio. In fact a molecule of benzene has the formula C6H6. Empirical formula CH – simplest whole number ratio. Molecular formula C6H6 – actual number o ...
... Empirical formula and Molecular formula Benzene consists of 7.69% H and 92.31%C. Converting this to a formula gives CH. This is the simplest integer ratio. In fact a molecule of benzene has the formula C6H6. Empirical formula CH – simplest whole number ratio. Molecular formula C6H6 – actual number o ...
ch22_lecture_6e_final
... from the atmosphere, where they occur as the free elements. A few elements occur naturally in their uncombined (native) state. These include S, carbon in coal, and unreactive metals. ...
... from the atmosphere, where they occur as the free elements. A few elements occur naturally in their uncombined (native) state. These include S, carbon in coal, and unreactive metals. ...
Silicon vs. Carbon - Coristines
... normal conditions but is dissolved by hydrofluoric acid, HF. Silicon is attacked by bases such as aqueous sodium hydroxide to give silicates, which are highly complex chemicals containing the anion [SiO4]4- ...
... normal conditions but is dissolved by hydrofluoric acid, HF. Silicon is attacked by bases such as aqueous sodium hydroxide to give silicates, which are highly complex chemicals containing the anion [SiO4]4- ...