| A | B |
|---|
| mass | the amount of matter a material takes up |
| conservation of mass | matter is not created or destroyed during a chemical reaction |
| conserve | to keep constant (unchanged) |
| reactants | a substance that takes part in and undergoes change during a reaction (on the LEFT hand side of a chemical formula) |
| products | a substance that is present at the end of a chemical reaction.(on the RIGHT hand side of a chemical equation) |
| chemical equation | A written representation of a chemical reaction using symbols of the elements to show the amount of substance of each reactant and product. |
| chemical reaction | the processes by which chemicals interact and rearrange to form new chemicals with different compositions. |
| arrow in a chemical equation | separates reactants and products, means "produces" or "yields" |
