Across
- 3. most common element
- 4. heavy metal
- 7. poison
- 9. pinkish-orange
- 12. from tress
- 14. found in bones
- 15. sulphates of iron or copper
- 16. 6th mist abundant element in earth's crust
- 17. hard silver-white metal
- 18. a planet
Down
- 1. acetic acid
- 2. precious metal
- 5. nearly as dense as lead
- 6. vital for functioning of all living cells
- 8. found on beaches
- 10. derived from beef or mutton
- 11. used as a blue pigment
- 13. braided cotton