Question

A piece of iron on heating gets red-hot
and on rusting it changes to reddish brown
powder. What general name is given to each
of these changes?
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Answer 1

Answer:

Heating and Rusting.

Explanation:

Rusting of Iron is chemical change which is an irreversible change, A piece of iron becomes rust due to the presence of moist air. while heating of iron is a physical change as the process affects the physical properties of iron(it is a reversible change).