Across
- 2. vertical
- 4. period 3 group 13
- 9. have a characteristic sound when struck
- 12. metalloids
- 13. can be bent or hammered flat
- 15. on the right side of table
- 16. period 5 group 11
- 18. period 4 group 11
- 19. negative charge
- 20. positive charge
Down
- 1. protons + neutrons
- 3. center or left side of periodic table
- 5. no charge
- 6. are strong and resist bending and breaking
- 7. reflect light when polished
- 8. staircase
- 10. period 6 group 11
- 11. can be drawn into a wire
- 14. breaks easily
- 17. horizontal