Across
- 1. Found in bones
- 5. Conductive metal used in wires
- 6. (Blank)2O
- 8. Used in batteries
- 10. [Ar] 4s² 3d¹⁰
- 12. Strongest reaction when in contact with water
- 13. Used in nuclear weapons
Down
- 1. Found in all organic molecules
- 2. Group 17 gas used in pools
- 3. Same name as one of the planets in our solar system
- 4. Needed for fire
- 7. Valuable yellow metal
- 9. Used at birthday parties
- 11. The element with the symbol Fe