Across
- 2. / a space where there aren't any particles
- 4. / synonym for squash
- 6. / the movement solid particles do
- 8. / the amount of space an object takes up
- 9. / a state of matter that has no fixed shape and an indefinite volume
- 11. / the ways the states of matter 'behave'
- 13. / a substance that flows freely
Down
- 1. / everything we can see or feel
- 3. / the movement of liquids and gases
- 5. / synonym for molecules
- 7. / synonym of spill or flow
- 10. / synonym for quantity
- 12. / it has a fixed shape and a definite volume