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Chapter 6
How Matter Changes
| Term | Definition |
|---|---|
| chemical reaction | a chemical change in which elements are combined or rearranged |
| mixture | a combination of substances in which no reaction takes place |
| dissolve | to break apart |
| solute | the substance that is dissolved in a solution |
| solution | a mixture in which one substance is dissolved in another |
| solvent | a substance capable of dissolving one or more other substances |
| chemical equation | a statement that uses symbols, formulas, and numbers to stand for a chemical reaction |
| reactant | a substance that is altered in a chemical reaction |
| product | a substance that is formed in a chemical reaction |
| law of conservation of matter | matter cannot be created or destroyed in chemical and common physical changes |
| balance | to keep the number of atoms the same on both sides of the equation |
| coefficient | a number placed before a formula in a chemical equation |
| synthesis reaction | a reaction in which elements combine to form a compound |
| decomposition reaction | a reaction in which a compound breaks down into two or more simple substances |
| single-replacement reaction | a reaction in which one element replaces another in a compound |
| double-replacement reaction | a reaction in which the elements in two compounds are exchanged |
| precipitate | a solid that is formed and usually sinks to the bottom of a solution |
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