| Question | Answer |
|---|---|
| Physical change | a change in one or more physical properties. |
| Chemical change | a change that produces new substances with new 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 small molecules |
| Energy | the ability to do work |
| Law of conservation of mass | matter is not created or destroyed in any chemical or physical change |
| Red and orange | the color that strong acids turn universal indicator paper |
| Blue, green, or purple | the color that strong bases turn universal indicator paper |
