Across
- 2. pencil
- 4. brittle and essential for plants
- 6. has medical uses
- 7. Ar
- 9. apart of the halogen family
- 10. used in minecraft
- 12. fills up balloons
- 13. atomic mass 48
- 15. regulates blood pressure
Down
- 1. atomic number 9
- 3. vital mineral
- 5. required to live
- 8. used to cover food
- 11. Period 2
- 14. bright