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