Across
- 1. Ferrous sulfate
- 4. Sodium chloride
- 6. carbon monoxide
- 8. carbon oxide
- 9. cuprous chlorine
- 11. aluminum chloride
- 12. Sodium oxide
- 14. atomic number 79
- 17. atomic number of 92
- 18. mercuric oxide
- 19. is a chemical element
- 20. melting point 3,000 °C (5,432 °F)
Down
- 2. atomic number 14
- 3. calcium oxide
- 5. aluminum oxide
- 6. cupric chlorine
- 7. atomic number 82
- 10. mercuric chlorine
- 13. aluminum nitride
- 15. metal is soft enough to be cut with a knife
- 16. atomic number 26