Across
- 3. coca cola can
- 7. computer
- 8. its also radioactive
- 10. used in batteries
- 11. added to our drinking water
- 12. also used in lights
- 13. its radioactive
- 14. needed to breathe
- 17. is a noble gas
- 18. used for wiring
- 19. reacts with water
- 20. bright signs
Down
- 1. a strong light metal
- 2. its bad and likes the basement
- 4. poison
- 5. smells bad
- 6. purify water
- 9. for a pool
- 15. a lot of our atmosphere
- 16. life is based on this