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24 Cards in this Set
- Front
- Back
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Period
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horizontal line or row in the periodic table
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Group/ Family
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vertical column of elements in the periodic table
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Representative Element
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the representative elements are all the elements in groups one, two, thirteen, fourteen, fifteen, sixteen, seventeen and eighteen of the periodic table
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Transition Elements
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any of the metallic elements within Groups 3 through 12 in the Periodic Table
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Protons
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positively charged particles in the nucleus of an atom
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Electrons
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negatively charged particles in the atom that occupies energy levels around the nucleus
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Neutrons
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neutral particle in the nucleus of an atom
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IUPAC
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International Union of Pure and Applied Chemistry
responsible fore the standardized names for chemical compounds |
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Ionic Bond
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type of bond formed when electrons transfer between metals and non-metals
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Ionic Compound
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compound held together by ionic bonds
always solids at room temperature and normal pressure, and when they form solutions, they conduct electricity |
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Stock's System
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roman numerals are used to indicate the charge of ion
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Polyatomic Ion
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charged particle made up of several non-metallic atoms joined together
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Covalent Bond
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bond formed when non-metallic atoms share electrons; atoms in a molecule are bound together by covalent bonds
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Molecular Compound
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a solid, liquid or gas that has electrically neutral atoms held together by covalent chemical bonds
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Cohesion
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force of attraction between molecules
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Adhesion
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the force of attraction between unlike molecules
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Surface Tension
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result of cohesion
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Density
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mass per volume of a substance
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Acid
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substance that produces hydrogen ions (H+) when dissolved in water; compound that dissolves in water to form a solution with a pH lower than 7 (at 25°C)
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Base
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substance that produces hydroxide ions (OH-) in water; compound that dissolves in water to form a solution with a pH greater than 7 (at 25°C)
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pH
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measure of the number of hydrogen ions in a solution; indicates how acidic or basic a substance is
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Aqueous
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dissolved in water
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Chemical Change
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change to a substance that always results in the formation of a different substance or substances
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Mole
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quantity that chemists use to measure elements and compounds; symbol: mol; Avogadro's number in the number of particles in a mole
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