Question

The density of a liquid _______ when it is heated.

Answer 1

1. We know, that Density (D) = Mass ( m)/ Volume (V)
2. The mass of a substance does not vary with the temperature and remains constant.
3. The volume of a substance varies directly with the temperature.
4. Thus, density varies inversely with the volume of any substance.
5. Hence, the density of a substance decreases with an increase in its volume due to a rise in the temperature of the substance and vice versa.

Hence, The density of a liquid decreases when it is heated.