A change in color, such as rusting of metal, is a sign that

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Chemistry

Keon Ballard

3 May, 18:20

A change in color, such as rusting of metal, is a sign that

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Carmelo · Answer 1

Iron undergoes a chemical reaction called oxidation to form rust, or iron oxide ... Copper forms a turquoise colored oxide and silver forms a black oxide. In both cases you know that a chemical reaction has taken place because of the color change.