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19 Cards in this Set
- Front
- Back
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reactants |
a substance that undergoes change in a chemical reaction |
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products |
new substances formed as a result of a chemical reaction |
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chemical equation |
a representation of a chemical reaction in which the reactants and products are expressed as formulas |
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coefficient |
numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product |
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mole |
an amount of a substance that contains approximately 6.02 x 10 to the 23rd particles of the substance |
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molar mass |
the mass of one mole of a substance |
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synthesis reaction |
a chemical reaction in which two or more substances react to form a single substance; A + B → AB |
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decomposition reaction |
a chemical reaction in which a compound breaks down into two or more simpler substances. AB → A + B |
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single-replacement reaction |
a chemical reaction in which one element takes the place of another element in a compound; A + BC → B + AC |
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double-replacement reaction |
a chemical reaction in which two compounds exchange positive ions and form two new compounds; AB + CD → AD + CB |
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combustion reaction |
a chemical reaction in which a substance reacts rapidly with oxygen, often producing heat and light |
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oxidation-reduction reaction |
a chemical reaction in which electrons are transferred from one reactant to another |
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chemical energy |
the energy stored in chemical bonds |
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exothermic reaction |
a chemical reaction that releases energy to its surroundings |
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endothermic reaction |
a chemical reaction that absorbs energy from its surroundings |
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reaction rate |
the rate at which reactants change into products over time |
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catalyst |
a substance that affects the rate of a chemical reaction without being used up in the reaction |
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equilibrium |
a state in which the forward and reverse paths of a physical or chemical change take place at the same rate |
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reversible reaction |
a chemical reaction in which the conversion of reactants into products and the conversion of products into reactants happens at the same time |
