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When water is boiling, it

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When water is boiling, it

  • Gets hotter
  • Increases in mass
  • Decreases in mass
  • Changes to steam




When water is boiling,

  • There is no further change in temperature more than 100 degrees celsius.
  • The water remaining in the container reduces not because there is a decrease in mass, but because there is a transfer of mass to the surrounding.
  • Additional heat supply only helps to break bonds and change state from liquid to steam, and not to increase temperature.
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Now for the right answer to the above question:

  1. Option A is incorrect.
  2. Option B is incorrect.
  3. C is incorrect.
  4. D is the correct answer.


You may please note these/this:

  • As water begins to boil, there is no further increase in temperature as the additional heat supplied only helps to break bonds and change its state and not to increase its temperature. This is what is called latent heat.

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/ culled from 2019 JAMB-UTME physics question 39 /

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