periodic table

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Across
  1. 4. Number 1 on the periodic table
  2. 6. Number 31
  3. 8. Number 6
  4. 9. Number 28
  5. 11. Number 50
  6. 12. Number 10
  7. 15. Number 79
  8. 17. Number 22
  9. 19. Number 53
  10. 20. Number 47
Down
  1. 1. What we breath in
  2. 2. Number 80
  3. 3. Number 78
  4. 5. Number 73
  5. 7. Number 82
  6. 10. Number 36
  7. 13. Number 7
  8. 14. Number 2
  9. 16. Number 30
  10. 18. Number 13