Across
- 3. heavy metal, once found in petrol
- 6. most reactive alkali metal
- 8. noble gas discovered through Curie's radioactive studies
- 9. element with electronic configuration 2.8.3
- 12. group 2 metal that burns with bright white light
- 13. soft, silvery metal that melts in your hand
- 14. non-metal present in graphite
- 16. non-flammable gas used in aerostatic zeppelins due to its low density
- 17. alloying partner of copper in brass
Down
- 1. gas produced when mixing an alkali metal with water
- 2. element with atomic mass 42
- 4. group 1 metal that produces a pink flame when mixed with water
- 5. halogen in period 6
- 7. transition metal that gives stainless steel its shine
- 10. element with 5 energy shells and 6 outer electrons
- 11. semi-metal in period 3 of the periodic table,widely used as a semiconductor in electronics
- 15. element with full outer shells in period 5