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What is Rusting of an article made up of iron called?

  • A.corrosion and it is a physical as well as chemical change
  • B.dissolution and it is a physical change
  • C.corrosion and it is a chemical change
  • D.dissolution and it is a chemical change

Answer: C

Rusting is corrosion, and it is a chemical change.

Iron combines with oxygen and water to form hydrated iron(III) oxide, a new substance with different properties from the metal. The change cannot be undone by physical means, which is what marks it as chemical rather than physical.

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