Across
- 3. row of elements (horizontal)
- 4. things on the periodic table
- 7. smallest particle
- 8. formed from chemical reactions
- 9. chemical element
- 11. release
- 13. gaseous element
- 15. column of elements (vertical)
- 16. smallest unit
- 17. thin coating of metal
- 18. electrons on the outside
- 22. two elements combined
- 24. letters of the element
- 25. center of an object
Down
- 1. solid material
- 2. 2882
- 5. negative charge
- 6. Russian chemist
- 10. changes during reaction
- 12. absorb
- 14. amount of protons
- 19. mass of element
- 20. lacks characteristics of metal
- 21. neutral charge
- 23. positive charge