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Question

Explain by giving example that change involves energy.


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Solution

  • A change can be defined as a difference in the physical and chemical properties of matter due to the alteration of some kind of energy.
  • Example- cooking, digestion of food, etc.
  • All these processes involve the absorption or release of energy.
  • We see that ice absorbs energy from the atmosphere and gets converted into water.
  • Hence change always involves energy.

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