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14 Cards in this Set
- Front
- Back
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activity series
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a list of elements in order of decreasing activity; the activity series of halogens is Fl, Cl, Br, I
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balanced equation
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a chemical equation in which mass is conserved; each side of the equation has the same number of atoms of each element
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catalyst
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a substance that increases the rate of reaction by lowering the acitvation-energy barrier; the catalyst is not used up in the reaction
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chemical equation
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an expression representing a chemical reaction; the formulas of the reactants (on the left) are connected by an arrow with the formulas for the products on the right.
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coefficients
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a small whole number that appears in front of a formula in a balanced chemical equation
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combination reaction
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a chemical change in which two or more substances react to form a single new substance; also called a synthesis reaction
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combustion reaction
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a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light
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complete ionic equation
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an equation that shows dissolved ionic compounds as dissacociated free ions.
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decomposition reaction
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a chemical change in which a single compound is broken down into two of more simpler products
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double-replacement reaction
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a chemical change that involves an exchange of positive ions between two compounds
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net ionic equation
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an equation for a reaction in solution showing only those particles that are directly involved in the chemical change
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single-replacement reaction
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a chemical change in which one element replaces a second element in a compound; also called a displacement reaction
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skeleton equation
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a chemical equation that does not indicate the relative amounts of reactants and products
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spectator ion
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an ion that is not directly involved in a chemical reaction; an ion that does not change oxidation number or composition during a reaction
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