| A | B |
|---|
| indicator | a sign that a chemical reaction is taking place |
| reactant | substance that enters into a chemical reaction |
| product | substances produced by a chemical reaction |
| single-replacement | uncombined element replaces an element in a single compound |
| double-replacement | two compounds combine to form two new compounds |
| chemical equation | symbols, formulas and numbers representing a reaction |
| synthesis reaction | two or more substances combine to form new substance |
| decomposition reaction | complex substance breaks down into simpler substances |
| exothermic reaction | energy is released |
| endothermic reaction | energy is absorbed |
| chemical reaction | process in which substances change into new substances |
