Properties and uses of some metals
1 mark · EasyState one reason why aluminium resists corrosion.
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It forms a thin layer of aluminium oxide that protects the surface.
Also accept: It has a thin oxide layer that stops further reaction.; A layer of aluminium oxide forms and stops corrosion.
Common mistakes: It never reacts with anything.
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Marking points
B1 · 1 mark · States that aluminium forms a thin layer of aluminium oxide which protects it from corrosion.
Worked solution
Aluminium resists corrosion because it forms a thin, strong layer of aluminium oxide on its surface.