Across
- 1. the amount of matter per unit volume
- 5. anything that has mass and takes up space
- 7. a form of matter that has a definite shape and volume
- 9. the smallest particles of a substance that still have the properties of that substance
Down
- 2. the form that matter has
- 3. a building block of matter and an individual part of a molecule
- 4. a characteristic that helps identify an object
- 6. form of matter that has a definite volume but no definite shape
- 8. form of matter that has no definite shape or volume