Chemistry

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Across
  1. 1. Fe
  2. 4. Contained in the periodic table
  3. 6. Oxygen has sixteen of them
  4. 9. Au
  5. 11. Hg
  6. 14. Na
  7. 15. N
Down
  1. 1. Charged particle
  2. 2. Pb
  3. 3. metal-like
  4. 5. K
  5. 7. O2
  6. 8. H2O
  7. 10. H
  8. 12. He
  9. 13. O