Question

How does the density of a substance change with the temperature.

Answer 1

1. The density of a substance decreases with an increase in temperature.
2. When the temperature of an object increases the molecules of that object gain energy.
3. They started to move from one place to other.
4. As a result its volume increases.
5. Density of a substance is given by, $Density=Mass/Volume$.
6. When the volume of an object increases its density decreases.

Hence, the density of a substance decreases with an increase in temperature.