| A | B |
|---|
| Chemical energy | This stored energy within chemical bonds |
| Endothermic reaction | A reaction that absorbs energy. (goes in) |
| Exothermic reaction | Reactions that give off energy. (exits) |
| Catalyst | A substance that changes the rate of a chemical without any change to its own structure. |
| Enzyme | A catalyst in your body. |
| Combustion | Tlhe burning of material in the presence of oxygen. |
| Affects the Rate of reaction | Stirring, raising temperature, and catalysts |
| Breaking bonds | Releases energy |
