| A | B |
| matter | anything that has mass and volume |
| density | the mass per unit volume of an object |
| volume | the amount of space an object takes up |
| property | characteristic of a substance |
| inertia | tendency of objects to stay at rest or remain in motion unless acted on by a force |
| gravity | force of attraction that depends on the mass and distance between two objects |
| mass | amount of matter in an object |