Across
- 3. it’s a density lower than those of other common metals
- 7. reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide
- 8. in its amorphous form it is a brown powder
- 10. the lightest element in the universe
- 11. where elements can be found
- 12. nonmetallic chemical element belonging to the oxygen group
- 16. inert monatomic gas with about two-thirds the density of air
- 17. a silvery-white lustrous metal with a slight golden tinge
- 21. includes muscle and nerve function, blood glucose control, and blood pressure regulation
- 24. hard, brittle crystalline solid with a blue-grey metallic luster
- 25. the most common element on Earth
- 26. first element in group 6
- 27. third most abundant gas in the Earth's atmosphere
- 28. least dense metal and solid element
Down
- 1. steel-gray, strong, lightweight and brittle alkaline earth metal
- 2. lightest halogen and exists at standard conditions as a diatomic gas
- 4. it is nonmetallic and tetravalent
- 5. soft and ductile metal with very high thermal and electrical conductivity
- 6. reactive metal that forms a dark oxide-nitride layer when exposed to air
- 9. symbol n atomic number 7
- 10. a colourless, odourless gas that is unreactive
- 12. silvery-white metallic d-block element
- 13. symbol Mn and atomic number 25
- 14. soft, silvery-white, highly reactive metal
- 15. second lightest of the halogens
- 18. it gives our cells the ability to break down food in order to get the energy we need to survive
- 19. lustrous transition metal with a silver color
- 20. electrons per shell 2, 8, 5
- 22. at room temperature and has a silvery-greyish
- 23. free element, produced by reductive smelting, lustrous, silver-gray metal