Which of the following is an example of a chemical reaction?

Options

  • A. Melting of ice
  • B. Boiling of water
  • C. Rusting of iron
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

C. Rusting of iron

Detailed Explanation

Rusting of iron is a chemical reaction because iron reacts with oxygen and moisture to form hydrated iron(III) oxide, commonly called rust. A chemical reaction generally produces one or more new substances with different properties. Other examples include burning of wood, digestion of food, photosynthesis and souring of milk. Melting and boiling are physical changes because no new substance is formed.