| A | B |
|---|
| physical change | a change in some properties of matter without forming a diffferent kind of matter |
| chemical change | the changing of a substance or kind of matter into a different kind of matter with different properties |
| combustion | the process of burning |
| reactant | substance used in a chemical reaction |
| product | substance made during a chemical reaction |
| chemical equation | a formula that describes a chemical reaction |
| polymer | a large molecule made of many smaller units connected together |
| matter | anything that has mass and occupies space |
