. Why is rust a chemical change when it can be cleaned from the surface of iron objects?
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A change in which one or more new substances are formed is known as chemical change. For Example, when the iron is exposed to air and moisture, rust formation takes place. Rust is nothing but Iron Oxide; a new substance formed out of the reaction. ... Hence, rusting of iron is a chemical change.
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because wet things have moisture and when moisture mix with iron its rusted
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