| A | B |
| matter | everything in the universe that has mass and takes up space |
| mass | the amount of matter something contains |
| solid | the state of matter that has a definite shape and takes up a definite amount of space |
| liquid | the state of matter that takes the shape of its container and takes up a definite amount of space |
| gas | the state of matter that has no definite shape and takes up no definite amount of space |
| volume | the amount of space matter takes up |
| density | the property of matter that compares the amount of matter to the amount of space it takes up |
| Mrs. Call | your favorite 4th grade science teacher! |