Rusting of iron and decaying of fruits are harmful chemical changes. Exaplain why you consirder them harmful ? How can you prevent them?
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The two chemical changes which are harmful to us are given below: Rusting of iron, Spoilage of food. ... When a piece of iron has been open for a while it acquires a brownish material film. This substance is called rust and is called the rusting process. Rusting is dangerous since iron artifacts are broken.
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