| A | B |
| solid | The molecules have a definite shape because they are so close together. |
| liquid | The molecules are farther apart and take the shape of their container. |
| gas | The molecules are very far apart and don't have a definite shape. |
| physical change | The color, size, or shape of the matter is changed in this type of change. |
| chemical change | A new kind of matter is formed in this type of change. |
| atom | This is the smallest form of matter. |
| physical change | tearing paper |
| chemical change | burning paper |
| physical change | getting a haircut |
| chemical change | a nail rusts |
| molecule | Several atoms join together to form this. |
| chemical change | baking a cake |