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12 questions from this quiz
They are too reactive for carbon reduction
The primary ore of aluminium
Al2O3Al_2O_3Al2O3
It lowers the melting point
Makes the process more energy-efficient
Graphite electrodes
Aluminium ions (Al3+Al^{3+}Al3+)
They gain electrons (reduction)
It is denser than the surrounding mixture
Oxide ions (O2−O^{2-}O2−)
They lose electrons (oxidation)
Oxygen and carbon dioxide
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