The density of water has its maximum value at 4 degree C because the thermal mot

Question

The density of water has its maximum value at 4 degree C because the thermal motion of the molecules overcomes the hydrogen bonds and allows the molecules to approach each other more closely. the thermal motion of the molecules is much greater than the energy of the hydrogen bonds and allows the molecules a great deal of freedom of motion. covalent bonds begin breaking at this temperature. the molecules are trapped in place by very strong hydrogen bonds. the maximum number of hydrogen bonds exists between the molecules at this temperature.

Explanation / Answer

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since at this T there is plenty of Hydrogen bonds, the molecule "contract" each other therefore, in the same space, we have more H2O molceules attached by these hydrogen bonds

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