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Which one of the following is NOT a chemical change?

Options

  1. ABurning of coal
  2. BRusting of metal
  3. CMelting of ice
  4. DReaction of acid with base

Correct answer

C. Melting of ice

Step-by-step solution

A chemical change involves the formation of one or more new substances with different chemical properties. Burning of coal is a combustion reaction, which is a chemical change. Rusting of metal is an oxidation reaction, which is a chemical change. Reaction of an acid with a base is a neutralization reaction, which is a chemical change. Melting of ice is a change of state from solid to liquid. The chemical composition of water remains the same ( H₂O ). Therefore, it is a physical change and not a chemical change. An

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