| A | B |
|---|
| weight | you measure the gravitational attraction (force that holds things on earth) |
| liquid | it has definite weight and it will take the shape of its container |
| solid | it has a definite shape and size, ex. rock, wood, piece of plastic |
| gas | it has no definite shape or weight. ex. oxygen, carbon dioxide |
| mass | you measure how much an object resists being moved |
| volume | you measure how much space the object will take up |
| Democritus | believed you couldn't cut matter in half forever-smallest piece called "uncuttible piece". |
| Aristotle | believed you can cut matter in half forever |
