Elements

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Across
  1. 5. nonmetallic and tetravalent
  2. 6. it is an element in air that we need to live
  3. 7. silvery-white lustrous metal with a slight golden tinge
  4. 8. colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C (−452 °F).
  5. 10. it is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas
  6. 12. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed.
  7. 13. a soft, silvery-white metal, similar to aluminium.
  8. 14. a colourless, odourless, tasteless gas that is the most plentiful element in Earth's atmosphere and is a constituent of all living matter.
Down
  1. 1. colourless, odourless, and tasteless gas lighter than air
  2. 2. a silvery gray metal of Group 4 (IVb) of the periodic table
  3. 3. a non metallic element and the only non-metal of the group 13 of the periodic table the elements.
  4. 4. silvery-white, lustrous, relatively soft metal of group 2 of the periodic table.
  5. 9. soft, silvery-white, metal that heads group 1, the alkali metals group
  6. 11. a tasteless, odourless, brittle solid that is pale yellow in colour, a poor conductor of electricity, and insoluble in water.