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16 Cards in this Set
- Front
- Back
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Subscript
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number below and to the right of an atom in a chemical formula...respresents the amount of that atom
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Double replacement
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chemical reaction where two ions switch places
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Activation Energy
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The minimum energy needed to get two substances to react
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Chemical Reaction
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one or more substances undergo a change to produce one or more different substances
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Conservation of Mass
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mass cannot be created or destroyed IN ORDINARY CHEMICAL OR PHYSICAL CHANGES
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Conservation of Energy
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energy cannot be created or destroyed IN ORDINARY CHEMICAL OR PHYSICAL CHANGES
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Decomposition Reaction
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A single compound breaks down to form two or more simpler substances
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Single replacement Reaction
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one element replaces another that is part of a compound
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Synthesis Reaction
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two or more substances combine to form a single compound
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Exothermic
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energy is released in a reaction
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Endothermic
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reaction in which energy is absorbed
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Formula
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describes a substance using chemical symbols and numbers
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Coefficient
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A number wrtiien to the left of a chemical formula. ALL the atoms in the formula are multiplied by this number.
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Chemical Equation
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A shorthand description of a chemical reaction
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Reactant
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The starting material in a chemical reaction
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Product
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The new substance formed in a chemical reaction
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