Across
- 2. bulb filament
- 4. Liquid metal
- 7. glass
- 8. Densest element
- 9. Element used in electronics
- 11. Radioactive element
- 13. in basements
- 15. Metal that melts in
- 17. Most abundant element
- 18. Element found in all
Down
- 1. forms
- 3. Red-brown liquid nonmetal
- 5. Radioactive noble gas
- 6. Noble Gas
- 10. Hard metal used in
- 12. Gas in bright advertising
- 14. palm
- 16. the universe