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# What Do You Mean by Anomalous Behaviour of Water ? - ICSE Class 8 - Physics

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ConceptCompare Expansivity in Solids, Liquids and Gases

#### Question

What do you mean by anomalous behaviour of water ?

#### Solution

Substances when heated expand. Their density [ $\frac { m }{ v }$ ] decrease. But in case of water:
When water is heated from 0°C to 4°C it CONTRACT and density INCREASE, heating water above 4°C starts expanding and density of water decrease.
This means water has maximum density at 4°C. This is called anomalous behaviour of water.

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Solution What Do You Mean by Anomalous Behaviour of Water ? Concept: Compare Expansivity in Solids, Liquids and Gases.
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