Question

Aluminium easily combines with oxygen but still it can be used for making kitchen utensils. Why?

Answer 1

This is because aluminium reacts with oxygen forming a layer on it which makes the metal unreactive and thus, helps in making utensils as they do not rust.
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Answer 2

Answer:

Aluminium easily combines with oxygen but still it can be used for making kitchen utensils becoz aluminium form a layer over the surface.

4Al + 3O2 ------>2Al2O3 . As Al2O3 forms a protective layer on the utensils and hence increases the lifespan of the utensils.