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Matter
| Term | Definition |
|---|---|
| matter | has mass and volume |
| mass | amount of material in a substance |
| volume | amount of space a substance occupies |
| solid | matter with fixed shape, fixed volume |
| liquid | matter with variable shape, fixed volume |
| gas | matter with variable shape, variable volume |
| phase | state of matter: solid, liquid or gas |
| density | amount of matter per unit volume |