| Term | Definition |
| mole ratio | conversion factor that relates the amount of moles of any two substances involved in a chemical reaction |
| molar mass | grams in one mole |
| theoretical yield | maximum amount of product that can be produced from a given amount of reactant |
| actual yield | measure amount of product obtained from a reaction |
| percent yield | ratio of the actual yield divided by theoretical yield multiplied by 100 |
| limiting reactant | controls the max. possible amount of product formed |
| excess reactant | substance that is not used up completly in a reaction |