Across
- 7. Atomic number 68
- 8. goes in pools
- 10. atomic number 12
- 11. has ant in it
- 13. symbol Ra
- 14. symbol Br
- 15. Lightest solid metal
- 18. sounds like Tennesee
- 19. atomic number 26
- 20. atomic number 11
Down
- 1. supermans weakness
- 2. sounds like German
- 3. symbol Rh
- 4. silvery grey matal
- 5. same name of a planet
- 6. symbol Fr
- 9. atomic number 1
- 12. Atomic number 21
- 16. ___ ballons
- 17. we breathe it