Across
- 2. everywhere
- 5. developed industrially
- 8. is toxic
- 9. colorless
- 10. immune system
- 12. number 3
- 15. 2nd most abundant
- 17. green-yellowish
- 18. atomic number 21
- 21. made in a lab
- 22. can be broken
- 26. hard
- 27. harder than steel
Down
- 1. natural state is metal
- 3. 2% earth's crust
- 4. highly reactive
- 6. 25% of the nickel coin
- 7. 100% recyclable
- 11. can be recycled
- 13. atomic number is 35
- 14. 10th most abundant
- 16. light metal
- 19. means new in Greek
- 20. is colorless
- 23. 8.2% of earth's crust
- 24. has a charge of 0
- 25. state of liberty