Why Rusting of iron is a chemical change ?
Why Rusting of iron is a chemical change ?
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Rusting of iron is a chemical change because
❖ A new substance iron oxide is formed.
❖ The change is permanent; the article has got a rust layer (which may only peal off).
❖ There is an increase in mass when rust forms.
❖ An energy change has taken place (which may not be visible).
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