Q. 43.9( 129 Votes )

Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why?

Answer :

The density of water is greater than ice cubes, hence ice cubes are lighter than water. This is why ice cubes are floats on water. 
When water is in the solid state, it has dominant hydrogen bonds between its molecules which are very strong.
In this state, when the water molecules come close to each other, the molecules are forced to arrange themselves into a certain structure - a hexagonal lattice that is the basis for the shape of the six-sided snowflakes.
So density is mass per volume so due to the increased bond angles and expanded molecular structure and, the volume is greater and the density is lower. 

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