Across
- 3. 82, poisonous
- 7. 5
- 9. 1
- 10. 78
- 12. 47, Ag
- 14. 19, essential nutrient
- 15. 22
- 16. 20, essential nutrient
- 17. 53
- 19. 54, used in automatic headlights
Down
- 1. 79, Au
- 2. 6
- 4. 29, used to make bronze
- 5. 11, used in salt
- 6. 26
- 8. 50, formerly used for tin cans
- 9. 2
- 11. 27
- 13. 3
- 16. 17
- 18. 8
- 20. 7