| A | B |
|---|
| Chemical Reaction | The process by which one or more substances undergo change to produce a different substance. |
| Chemical Formula | A shorthand notation for a compund or diatomic element using chemical symbols and numbers. |
| Chemical Equation | A shorthand description of a chemical reaction usuing chemical formulas and symbols. |
| Reactants | The starting meterials in a chemical reaction. |
| Products | The substances formed by a chemical reaction. |
| Law of Conservation of Mass | The law that states mass is neither created or destroyed in chemical and physical changes. |
| Exothermic | The term used to describe a physical or chemical change in which energy is released. |
| Endothermic | The term used to describe a physical or chemical change in which energy is absorbed. |
| Law of Conservation of Energy | The law that states energy is neither created or destroyed. |
| Activation Energy | The minimun amount of energy needed for substances to react. |
| Catalyst | A substance that speeds up a reaction without being permanently changed |
| Inhibitor | A substance that slows down or stops a chemical reaction. |
