Across
- 1. Element that forms millions of compounds
- 4. An example for nuclear fuel
- 6. Liquid non-metal
- 9. First metal used by man
- 11. Heaviest element by atomic weight
- 12. Lightest gas
- 14. Wonder metal
- 15. Metal ion that shows apple-green flame
- 19. Abundant ELEMENT in the earth's crust
- 20. A non-metal used to preserve food material
Down
- 2. Most abundant metal in the earth's crust
- 3. An example of a semiconductor
- 5. An alloy of copper and zinc
- 7. Deficiency causes anemia
- 8. An allotrope of carbon
- 10. Metal which can be cut with a knife
- 13. Metal used in galvanisation
- 16. Inert gas used in tungsten filament bulbs
- 17. Liquid metal at room temperature
- 18. Most malleable metal