Extracting aluminium

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1. What properties does aluminium have?

  • corrodes easily
  • heavy
  • Low density, excellent conductor, of electricity, easily shaped, resists corrosion
  • very strong
  • all of the above
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2. Why can Aluminium not be displaced by carbon

  • aluminium is an expensive metal
  • aluminium is too strong
  • Aluminium is more reactive than carbon
  • aluminium is less reactive than carbon

3. Why is aluminium so useful?

  • can be used to make cars
  • It resists corrosion and is very light
  • Very strong
  • very cheap and there is lots of it

4. Why does aluminium not corrode easily?

  • expensive
  • it is strong
  • Has a protective layer of aluminium oxide
  • it isnt reactive so doesnt react to form rust etc

5. Why does it cost so much to extract aluminium?

  • Very expensive- lots of heat and electricty is needed
  • It is worth a lot of money
  • Have to pay the people to extract the metal
  • Very rare


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