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When ice melts, its density _______?
1. Decreases
2. Becomes Zero
3. Increases
4. Remains the same

1 Answer

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Best answer
Correct Answer - Option 3 : Increases

CONCEPT:

  • Density is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume. 
    • An object made from a comparatively dense material (such as iron) will have less volume than an object of equal mass made from some less dense substance (such as water).
  • Ice: ​It is one of the states of water, amongst other states i.e. Liquid, Solid, and Gaseous.

EXPLANATIONS:​

  • Melting of ice: 
    • When you heat ice, its temperature rises, but as soon as the ice starts to melt, the temperature stays constant until all the ice has melted.
    • This happens because all the heat energy goes into breaking the bonds of the ice's crystal lattice structure.
  • The ice shrinks (decreases volume) and becomes denser. The ice density will increase from 0.92g/cm3 to that of liquid water (1g/cm3​).
  • so, density increases Hence option 2 is correct.

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