Science Crossword

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Across
  1. 3. atom
  2. 7. mix
  3. 8. neutron, proton, electron
  4. 11. boiling point
  5. 12. light
  6. 14. heating up liquid
  7. 17. ice
  8. 18. dissolving
  9. 19. flammable
  10. 21. raw metal
Down
  1. 1. metal
  2. 2. perfume
  3. 4. fragile
  4. 5. fire
  5. 6. Periodic Table
  6. 9. moldable
  7. 10. ice
  8. 13. common metal
  9. 15. explosive
  10. 16. mix of word-6
  11. 20. metal combination