States of matter

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Across
  1. 2. Keeps you warm
  2. 3. I'm a state of matter that goes into fluro lights
  3. 5. Water turns into ice, is there any other way with water.
  4. 6. We are made of...
  5. 7. a solid changing directly into a gas, skipping the liquid phase
  6. 8. If you look up, you will see something bright, it is made of...
  7. 9. Take a lucky guess (two words in one)
  8. 11. What we live on
  9. 12. you see me every day, I live in millions of objects
  10. 14. NOT FREEZING, (two words in one)
  11. 16. neutrons, protons, atoms then...
  12. 18. the energy of xxx, meaning it's the energy something has because it's moving
  13. 19. You Can't see me
  14. 20. What happens when you heat ice
Down
  1. 1. What we are talking about
  2. 3. change This when you change something not chemically (two words in one)
  3. 4. It's not reversible it's!...
  4. 10. I'm a matter that is usually very degenerate (two words in one)
  5. 13. You need me to stay alive, and to keep you hydrated
  6. 15. I'm a state of matter, I'm made of particles of light (two words in one)
  7. 17. YOU NEED ME