| A | B |
| Chemical reaction | new substance produced |
| reactants | beginning substances |
| products | ending substances |
| spontaneous reaction | rxn that proceeds on its own |
| exothermic reaction | rxn that produces heat (feels warm) |
| endothermic reaction | rxn that absorbs heat (feels cool) |
| synthesis rxn | two or more substances combining |
| decomposition rxn | one substance breaking into two or more |
| single replacement rxn | one substnce takes the place of another |
| double replacement rxn | two substances replace two other substances |
| warmer temperatures | speed up rxn rate |
| cooler temperatures | slow down rxn rate |
| catalyst | substance that speeds up rxn rate |
| smaller particles | speed of rxn rate |
| larger particles | slow down rxn rate |
| stirring | speeds up rxn rate |
| greater concentration of reactants | speed up rxn rate |