Across
- 1. its in milk
- 5. the first element
- 7. a 5 cent coin
- 8. what's found in most batteries
- 9. what weakens superman
- 11. what a quarter is made from
- 15. what you breathe
- 16. what forks and spoons are made of
- 17. material from a penny
- 18. material from a tin
- 20. comes from salt
Down
- 2. what you find in your pencil
- 3. what you use to clean your pool
- 4. also a planet
- 6. what a one dollar coin is made from
- 10. kinds of signs hanging outside of convenience stores
- 12. atomic number of 53
- 13. mass of 4
- 14. contains Tennessee's NFL team mascot in the name of this element
- 19. sort of sounds like 'boring'