Across
- 1. An element important for strong bones
- 4. A lightweight metal used in cans
- 7. An element that smells like rotten eggs
- 8. A gas essential for breathing
- 10. A metal that conducts electricity well
- 11. The element that forms the basis of life
- 12. A shiny metal used in jewellery
- 13. The lightest element
- 16. A metal with the atomic number of 37
Down
- 2. A metal that burns bright
- 3. A green gas used to disinfect water
- 5. A gas used in bright advertising lights
- 6. A metal used to make steel
- 9. The main gas in Earth’s atmosphere
- 13. A noble gas used in balloons
- 14. A valuable yellow metal
- 15. A reactive metal found in salt