Across
- 1. sixth element
- 3. found in foil and cans
- 8. used to clean pools
- 9. forth element
- 11. found in bananas
- 13. often used in fireworks
- 15. has the symbol 'B'
- 17. first element
- 18. seventh element
- 19. often found in toothpaste
Down
- 1. necessary for strong bones and teeth
- 2. has a the symbol 'Li'
- 4. eighteenth element
- 5. has the symbol 'Na'
- 6. used in light fixtures
- 7. often used to inflate party balloons
- 10. fourteenth element
- 12. has the symbol 'S'
- 14. fifteenth element
- 16. important for respiration