Across
- 3. has the highest melting point of all metalloids
- 5. doesn't have a flammable reaction
- 6. the ninth abundant element
- 8. known to the Greeks in 20 BC
- 9. its natural state is gas
- 13. children need zinc for growth
- 14. is non-magnetic
- 15. the name comes from Germany
- 17. discovered in 17714 by Carl Whilhel
- 18. 23rd most common element in the sun
- 21. was discovered twice
Down
- 1. is not found in free nature
- 2. is found in the stars
- 4. is a metalloid
- 7. discovered in 2000 BC
- 10. was discovered in 1751
- 11. the sun makes 700 million tons of helium per sec
- 12. discovered in 1814 by William Ramsey
- 14. has a foul smell we dislike
- 16. easy to cut using a knife
- 19. steel could not be made
- 20. 26 neutrons in titanium