Elements crossword by Ian and Amos

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Across
  1. 3. made from two compounds
  2. 5. gas liquid solid
  3. 9. stuff
  4. 11. gas to liquid
  5. 13. substances from a chemical reaction
  6. 14. spread out
  7. 15. made from one type of material
  8. 17. solid to liquid
  9. 18. amount of matter in a thing that made out of
Down
  1. 1. not shiny
  2. 2. atoms
  3. 4. liquid to gas
  4. 6. liquid to solid
  5. 7. made from elements
  6. 8. solid to gas
  7. 10. flow around each other
  8. 11. become denser
  9. 12. a staring substances in a chemical reaction
  10. 16. cannot move
  11. 17. shiny