Across
- 2. what you breath in
- 4. has 15 protons
- 7. used in pools
- 10. strange voice
- 12. named after a famous German scientist
- 13. used for building bones
- 14. planet starts with m
Down
- 1. first letter of Hello is the chemical symbol
- 3. The continent we live in
- 4. banana
- 5. has 16 protons
- 6. can be used as a foil
- 8. chemical symbol: Be
- 9. chemical symbol: Na
- 11. used for bright signs