Question

explain why the density of pure water is maximum at 4 degree Celsius

Answer 1

when ice melts to liquid water the molecules of water collapse and the density of water increases....so density increases.On heating about 4℃,density decreases owing to general thermal expansion of the liquid.
Hence maximum density is recorded at this temperature ..

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Answer 2

Explanation:

The maximum density of water occurs at 4 °C because, at this temperature two opposing effects are in balance. Explanation: In ice, the water molecules are in a crystal lattice that has a lot of empty space. When the ice melts to liquid water, the structure collapses and the density of the liquid increases.

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