Across
- 4. First artificially synthesized element
- 7. Strengthens your bones
- 8. Very corrosive
- 12. Found in matches
- 14. Used in atomic bombs
- 17. Vital to life
- 18. Most abundant element in the universe
- 19. Named after Einstein
- 20. One of the two liquid elements
- 21. First radioactive element
- 23. Created in stars
- 25. The most dangerous element
- 26. Used to be used to cure furs
- 27. Used in balloons
- 28. Sometimes used in nuclear power
- 30. Victorian poison
- 33. Used in yellow fireworks
- 34. A composer of Bronze
- 36. Named after the planet in "Superman"
Down
- 1. Used to create green fireworks
- 2. Has a series named after it
- 3. Sounds like "think"
- 5. 118th element
- 6. Smells like rotten eggs
- 7. Used in car parts
- 9. Used in pools
- 10. Main composer of air
- 11. Named after the creator of the periodic table
- 13. Used to make red fireworks
- 15. Named after one of the western states of USA
- 16. Named after the Roman sea god
- 22. Used in plane parts
- 24. Similar to Arsenic
- 29. Most radioactive element
- 31. Used in Silicone
- 32. Named after Marie Curie
- 35. Diamond is one of its forms