Chapter 14 - Chemical Reactions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| chemical reaction | the process by which one or more substances undergo change to produce one or more different substances
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| chemical formula | a shorthand notation for a compound or a diatomic element using chemical symbols and numbers
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| chemical equation | a shorthand description of a chemical reaction using chemical formulas and symbols
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| reactants | the starting materials in a chemical reation
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| products | the substances formed from a reaction
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| law of conservation of mass | states that mass is neither created nor destroyed in ordinary chemical and physical changes
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| four clues to chemical reactions | -gas formation-precipitate (solid) formation-color change-energy change
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| synthesis reaction | a reaction in which two or more substances combine to form a single compound
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| decomposition reaction | a reaction in which a single compound breaks down to form two or more simpler substances
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| single-replacement reaction | a reaction in which an element takes the place of another element that is part of a compound
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| double-replacement reaction | a reaction in which ions on two compounds switch places
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| exothermic | a chemical reation in which energy is released or removed
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| endothermic | a chemical reation in which energy is absorbed
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| law of conservation of energy | states that energy can be neither created nor destroyed
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