Periodic Table, Elements, Compounds, and Molecules

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1234567891011121314151617181920
Across
  1. 2. O3
  2. 6. C
  3. 7. CO2
  4. 12. The letter or letters that represent an element (e.g. Fe)
  5. 14. A.M.U.
  6. 17. The last column in the periodic table
  7. 19. Au
  8. 20. FeS2
Down
  1. 1. Ge
  2. 3. Ne
  3. 4. The number that corresponds to each element in the periodic table
  4. 5. Fe
  5. 8. Am
  6. 9. He
  7. 10. W
  8. 11. S
  9. 13. C2H4
  10. 15. H2O
  11. 16. Ti
  12. 18. O