Across
- 3. Found in all living things
- 4. Shiny precious material
- 7. Used in pools
- 9. Used in balloons
- 10. Used in batteries
- 11. Very reactive material
- 12. Burns in bright white light
- 15. Lightest element
- 16. Needed for breathing
- 18. Used in wires
- 19. Yellow solid smells bad
Down
- 1. Used to prevent rust
- 2. Used in computer chips
- 3. Good for bones
- 5. Glows in the dark
- 6. Lightweight metal (foil)
- 8. Makes up most of the air
- 13. Used to make steel
- 14. Explodes in water
- 17. Valuable yellow material