Across
- 5. This metal is known as "white gold".
- 9. We get most of this from milk.
- 11. The second most abundant element in the universe
- 12. It's a pure black amorphous powder.
- 14. I'm industrially produced by cryogenically distilling air.
- 15. Has an atomic symbol of Ra.
- 18. My atomic number is 54.
- 19. The air we breathe is 78% percent of this
- 20. The lightest metal
Down
- 1. Has an atomic number of 10.
- 2. I'm a bluish-white metal that is hard, but brittle.
- 3. Around 10% of the mass in the human body is made of me.
- 4. A soft white metal named after Europe.
- 6. Compared to other metals, I'm less chemically reactive.
- 7. Animals, and plants require this.
- 8. My atomic symbol Dy,
- 10. I'm the most reflective material.
- 13. Can take the form of one of the hardest substances or one of the softest.
- 16. The heaviest metal.
- 17. Has the same name as a planet.