Question

Explain the Anomalous expansion of water

Answer 1

Water has an unusual physical property. When cooled, it first contracts in volume as do other liquids but below 4℃, it starts expanding and continues to do so till the temperature reaches 0℃, the point at which it freezes into ice. This unusual physical property of water is generally termed as ''Anomalous Expansion Of Water''.

Answer 2

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Here is the answer to your question......



Water shows unusual expansion when heated from 0°C to 4°C. Instead of expanding with rise in temperature, water contracts when its temperature increases from 0°C to 4°C.

Here is an example:

Take a cube of ice at -3°C and heat it. The cube will expand till ice starts melting. After complete melting of ice, it contracts till the temperature reach 4°C and then starts expanding. Thus, water has its maximum density and minimum volume at 4°C.

This phenomenon is called anomalous expansion of water.


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