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Question

What type of change is the melting of wax?


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Solution

Physical change:

  • “A change in which a substance undergoes a change in its physical properties is called a physical change.”
  • A physical change is generally reversible.

Melting of wax:

  • When a candle is lighted, the wax of the candle melts due to heat which again solidifies on cooling.
  • This change results only in the change in the physical properties of wax and no change in chemical properties takes place.
  • Thus, it is a physical change. It is also reversible.

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