| A | B |
|---|
| physical change | alters a substance without changing its composition |
| physical change | can be undone by physical means |
| chemical change | process that involves substances changing into new substances |
| chemical change | can be undone only through chemical reactions |
| chemical change | examples are rotting, oxidizing, and burning |
| physical change | examples are bending, cutting, and crushing |
| law of conservation of mass | mass is neither created nor destroyed during a chemical reaction |
