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C6.3 The extraction of aluminium
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Total cards: 7•Content version: v4•Public deck•Updated: 8/1/2026
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#1
Front (Question)
Why is aluminum useful?
Back (Answer)
It has a low density but is very strong
#2
Front (Question)
Why can you not use carbon to displace aluminum?
Back (Answer)
As it is more reactive than carbon
#3
Front (Question)
Where can you get aluminum from?
Back (Answer)
Bauxite ore
#4
Front (Question)
How can we save energy in the electrolysis of aluminium?
Back (Answer)
Add cryolite to lower the melting point
#5
Front (Question)
What is the half equation at the cathode of the electrolysis of aluminium oxide?
Back (Answer)
Al+3(l) + 3e- → Al
#6
Front (Question)
What is the half equation at the anode of the electrolysis of aluminium oxide?
Back (Answer)
2O-2 → O(2) molecule + 4e-
#7
Front (Question)
Why do the electrodes need to be replaced at the anode?
Back (Answer)
Carbon reacts with oxygen to produce carbon dioxide So the carbon electrode gradually burn off and need to be placed regulary