Natural Resources

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Across
  1. 1. a heavy silver-white poisonous metallic element
  2. 3. a yellow precious metal
  3. 6. it can produce fuels including petrol, paraffin,oil
  4. 10. another name for potassium hydroxide
  5. 12. a strong, hard magnetic silvery-grey metal
  6. 13. land any land good to grow crops.
  7. 14. it is called also wolfram
  8. 16. it is used to make stainless steel
  9. 18. the chief commercial ore of aluminium
  10. 19. a precious shiny greyish-white metal
Down
  1. 2. burns as a solid fossil fuel
  2. 4. a clear and colourless crystalline form of pure carbon
  3. 5. it tarnishes to a dull gray color when exposed to air
  4. 6. it a salt or ester of a phosphoric acid
  5. 7. wood prepared for use in building and carpentry
  6. 8. it is used as glass furnace electrodes
  7. 9. it has the symbol Cu
  8. 11. it provides us with nuclear fuel
  9. 15. a flammable substance consisting of methane
  10. 17. it is used for protecting iron against corrosion.