If same mass of liquid water and a piec...

If same mass of liquid water and a piece of ice is taken, then why is the density of ice less than that of liquied water ?

Text Solution

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The mass per unit volume (i.e., mass/volume) is called density. Since water on freezing , therefore , volume of ice for the same mass of water is more than liquid water. In other words, density of ice is lower than liquid water and hence ice floats on water.

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Density of ice is less than that of water because of

extensive hydrogen bonding

crystal modification of ice

open porous structure of ice due to hydrogen bonding

different physical states of these

The density of ice differs from that of water because

ice is a solid and water is a liquid

hydrogen bonding exists only in water

ice has an open cage-like structure

ice is covalently bonded but water involves ionic bonding

Assertion : Ice cube floats on water. Reason : Density of ice is less than that of water.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.