| A | B |
| catalyst | substance that increases the reaction rate but is not changed by the reaction |
| chemical equations | A statement that uses chemical formulas to show the identities and relative amounts of the substances involved in the chemical reaction |
| coefficient | number written in front of chemical elements or compounds indicating the number of atoms or molecules of a substance present in the reaction. |
| concentration | amount of substance in a given unit of volume |
| decomposition | a chemical reaction in which a single compound breaks down into two or more elements or new compounds |
| double-replacement | a chemical reaction that involves the exchange of positive ions between two compounds and produces either a precipitate, a gas, or water. |
| exothermic reaction | reaction which releases energy thus increases temperature |
| endothermic reaction | a reaction which absorbs energy and thus results in an overall lowering of temperature |
| products | substances which are produced by a chemical reaction |
| reactants | substances which enter a chemical reaction |
| reaction rate | speed with which reactants turn into products |
| single replacement reactions | A chemical reaction that occurs when the atoms of one element replace the atoms of another element in a compound |
| synthesis | A chemical reaction in which two or more substances react to yeild a single product |
| chemical reaction | the process by which the atoms of one or more substances are rearranged to form different substances |
| precipitate | a solid produced during a chemical reaction |
| combustion reaction | oxygen combines with a substance and release energy in the form of heat and light. |