Across
- 5. Element C
- 8. Element N
- 11. Element He
- 15. Element Cl
- 16. Element Ag
- 17. Element Mg
- 19. Protactitium Nitrogen Thorium Erbium Sulfur (Look up their symbols, it spells a word)
- 20. Element Ar
- 22. Element S
- 23. Element Na
- 24. Element F
- 25. Element P
Down
- 1. Element Ca
- 2. Element Be
- 3. Element Fe
- 4. Tungsten Hydrogen Iodine Thulium Erbium (Look up their symbols, it spells a word)
- 6. Element Cu
- 7. Element Ne
- 9. Element Li
- 10. Element H
- 12. Element B
- 13. Element K
- 14. Element Al
- 18. Element U
- 21. Element Au
- 23. Element Si