Question

How does density of a substance change with temperature.

Answer 1

1. The density of a substance decreases with an increase in temperature.
2. When temperature increases the molecules get energy.
3. The molecules started to move from one portion to another.
4. As a result the volume of the substance increases.
5. The density of an object is defined as the amount of substance in a unit area.
6. Then $Density=mass/Volume$
7. When volume increases density decreases.
8. Hence, the density of a substance decreases with an increase in temperature.