Question

Why the rusting of iron is chemical change ?

Answer 1

The rusting of iron is a chemical change because it is two substances reacting together to make a new substance. When iron rusts, iron molecules react with oxygen molecules to make a compound called iron oxide. Rusting would only be a physical change if iron molecules remained pure iron throughout the process.

Answer 2

rusting of iron is chemical change because it change its chemical property and it can't converted into its original form by physical method.
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