How do you know that rusting of an iron is a change
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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. The colour of the surface of the iron also changes. Hence, rusting of iron is a chemical change.
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here is your answer
Explanation:
...
when the rusting of iron takes place..
the oxygen in the atmosphere react with the outer layer of iron and make the compound iron oxide which is reddish brown in colour and is visible properly and thus we came to know that rusting has taken place..
hope you get it
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