Across
- 4. there are two of these in water
- 6. this sops superman
- 7. trees absorb this
- 9. the rows on a periodic table
- 10. this element is named after france
- 12. this metal melts in your hand
- 13. pennies are made of this
- 14. there is a valley in California named after this
- 15. you breath this
- 16. bones are made of this
- 19. this element is found in thermometers
Down
- 1. this is in toothpaste
- 2. this element is named after a planet
- 3. you can find this in bananas
- 5. this makes signs glow
- 8. if this fills balloons, they float
- 11. there is a state named after this
- 12. earrings are made of this
- 17. this element makes up bronze
- 18. this makes a protective coating around coins