Across
- 4. Phase change from solid directly to gas
- 5. High-energy state of matter found in stars
- 9. Phase change from gas to liquid
- 11. Mass divided by volume
- 13. Phase change from liquid to gas
- 18. A substance made of only one kind of atom
- 19. State of matter with fixed shape and volume
- 20. Phase change from liquid to solid
Down
- 1. The amount of space an object takes up
- 2. Type of energy associated with motion; used in particle theory
- 3. A substance made of two or more elements chemically combined
- 6. The ability to do work or cause change in matter
- 7. The amount of matter in an object
- 8. Two or more substances physically combined
- 10. State of matter with fixed volume but no fixed shape
- 12. Two or more atoms bonded together
- 14. State of matter with neither fixed shape nor volume
- 15. Phase change from solid to liquid
- 16. The basic unit of matter
- 17. Surface-level phase change from liquid to gas