Across
- 4. gold foil
- 6. poor conductor
- 9. horizontal row
- 10. metal divider
- 13. negative charge
- 14. smallest particle
- 17. reactive nonmetals
- 18. vertical column
- 19. metal-like nonmetal
- 21. electron path
- 22. atom’s center
- 23. very reactive metals
Down
- 1. neutral particle
- 2. conducts electricity
- 3. positive charge
- 5. reactive metals
- 7. electron transfer
- 8. stable gases
- 11. plum pudding
- 12. charged atom
- 15. shared electrons
- 16. planetary model
- 20. billiard ball