IGCSE Chemistry 0620/21/O/N/21 Q27


27 Aluminium objects do not need protection from corrosion. Iron objects must be protected from corrosion.

Which statement explains why aluminium resists corrosion?

A Aluminium does not form ions easily.
B Aluminium does not react with water or air.
C Aluminium has a protective oxide layer.
D Aluminium is below iron in the reactivity series.

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Answer ( 1 )


    Aluminium has a protective oxide layer that prevents the aluminium beneath it from rusting.

    Ans: C

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