| A | B |
| synthesis reaction | 2 or more substances combine to form a single compound |
| decomposition reaction | a single compound breaks down to form 2 or more simpler substances |
| single-replacement reaction | an element takes the place of another element that is part of a compound |
| double-replacement reaction | ions in 2 compounds switch places |
| exothermic | a chemical reaction in which energy is released |
| endothermic | a chemical reaction in which energy is absorbed |
| law of conservation of energy | energy can be neither created nor destroyed |
| activation energy | the minimum amount of energy needed for substances to react |
| catalyst | a substance that speeds up a reaction |
| inhibitor | a substance that slows down or stops a reaction |
| exo | go out |
| thermic | heat or energy |
| surface area | the amount of exposed surface |
| concentration | a measure of the amount of 1 substance dissolved in another |