Across
- 3. Ice turns straight into air
- 4. Pressure is high water doesn't boil.
- 7. Water becomes ice when it gets cold.
- 10. Solid liquid and gas together.
- 14. Gas becomes electrically charged.
- 15. Gas turns straight into ice
- 18. Matter changes from one form to another.
- 20. Liquid bubbles when it's really hot.
Down
- 1. Water disappears when the sun is out.
- 2. Liquid turns into solid crystals.
- 3. When things are a solid, liquid, or gas.
- 5. Heat makes things hotter, cold makes things colder.
- 6. Gas doesn't become a gas when pressure drops.
- 8. Clouds are made when air cools.
- 9. Water is as hot as it can get without becoming a vapor.
- 11. Matter changes from solid to liquid or gas.
- 12. Water is as cold as it can get without becoming ice.
- 13. Liquid turns into solid like ice freezing.
- 16. Water disappears into the air when it's hot.
- 17. Water turns into a vapor with heat.
- 19. Ice becomes water when it gets warm.