Across
- 2. the smallest unit of matter
- 4. Always keeps its shape
- 6. completely fills up the container it is in
- 7. two or more atoms bonded together to make something
- 9. to change a liquid into a solid by cooling
Down
- 1. to change from a gas into a liquid by cooling
- 3. to change a liquid into a gas by heating
- 5. Anything that has mass and takes up space
- 8. takes the shape of its container