States of Matter

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Across
  1. 3. a substance that expands freely and particles move around quickly
  2. 4. the degree of heat present
  3. 7. liquid to gas
  4. 8. an object in motion
  5. 10. a substance that flows freely and has a constant volume
  6. 12. ionized gas consisting of free electrons and positive ions
  7. 14. a group of atoms bonded together
  8. 15. highest temperature and pressure at which vapor and liquid exist in equilibrium
  9. 18. Gas to solid
Down
  1. 1. Solid to gas
  2. 2. when matter changes form
  3. 5. temperature where water turns into vapor
  4. 6. the capacity to do work
  5. 9. temperature and pressure at which the solid, liquid, and gas can exist in equilibrium
  6. 11. liquid to solid
  7. 13. material substance that constitutes the observable universe
  8. 14. solid to liquid
  9. 15. gas to liquid
  10. 16. the amount of force applied to a surface or area
  11. 17. matter that is firm and stable