| A | B |
|---|
| anything that has mass and volume (occupies space) | matter |
| the amount of matter in an object | mass |
| the amount of space something takes up or occupies | volume |
| characteristics that are used to identify matter | properties |
| a property that is observed without changing the matter into a new substance | physical property |
| the measure of the energy of motion of the particles in matter | temperature |
| a device used to measure temperature | thermometer |
| a device used to measure mass | a balance |
| the mass of an object divided by its volume | density |
| a substance with a definite volume but no definite shape | liquid |
| a substance with definite shape and definite volume | solid |
| a substance with no definite shape or volume | gas |
| when a gas becomes a liquid | condensation |
| when a liquid becomes a solid | freezing |
| when a solid becomes a liquid | melting |
| when a liquid becomes a gas | evaporation |
| when a solid becomes a gas | sublimation |
| when a gas takes up more space | expands |
| when a gas takes up less space | compress |
