why is rusting a chemical change
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Explanation:
In chemistry rusting is called as oxidation. Oxidation is a chemical process where metal gains oxygen and become oxide. In rusting the Iron ore make a chemical reaction with the oxygen in the presence of water and environmental or atmospheric moisture to produce an Iron oxide. Iron oxide is otherwise called as rust.
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Answer:
As moisture and air is contacted with iron to form a Reddish layer over it , therefore rusting is called a chemical change
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