CBSE Class 9 Answered
Liquids generally have low density as compared to solids,but ice floats on water.why?
Asked by ABHILASHA | 10 Jan, 2018, 08:33: PM
Expert Answer
The density of water is greater than ice cubes, hence ice cubes are lighter in comparison to water because of this reason ice cubes are floats on water.
Now you may have a question that Why ice is less dense than water.
Water, when in the solid state, has dominant hydrogen bonds existing between its molecules which are very strong.
In the solid state, when the water molecules come close to each other, the molecules are forced to align themselves into a very particular structure - a hexagonal lattice that is the basis for the six-sided snowflakes.
Now, since Density = Mass/ Volume so due to the increased bond angles and expanded molecular structure and, this implies greater volume, and hence, lower density.
Answered by Ramandeep | 11 Jan, 2018, 09:43: AM
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