| A | B |
| Matter | anything that has mass and takes up space. |
| Mass | the amount of matter in an object. |
| Solid | a state of matter that has a definite shape and volume. |
| Liquid | a state of matter that has a definite volume, but does not have a definite shape. |
| Gas | a state of matter that does not have a definite shape or volume. |
| Density | the ratio of mass to its volume. |
| Solubility | a measure of how much of a certain substance will dissolve in another substance. |
| Conductor | a material that allows electricity or heat to pass through it easily. |
| Insulator | a material that does not allow electricity or heat to pass through it easily |