Q. 14.7( 6 Votes )

Is it always true that the molecules of a dense liquid are heavier than the molecules of a lighter liquid?

Answer :

The density of a liquid not only depends on the weight of the liquid but also on its structure or how the molecules are packed. Thus a lighter liquid may be more tightly packed and hence can have a higher density. For example, a molecule of oil is heavier than a molecule of water. But oil molecules, because of their composition, are loosely packed and thus are less dense than water.


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