Question

Density of a substance decrease with an increase in temperature. Give reason​

Answer 1

Density changes with temperature because volume changes with temperature. Density is mass divided by volume. As you heat something up, the volume usually increases because the faster moving molecules are further apart. Since volume is in the denominator, increasing the volume decreases the density.

Answer 2

Density of a substance decrease with an increase in temperature because the volume of the substance increases with an increase in temperature.

HOPE IT HELPS YOU

PLZ MARK AS BRAINLIEST :)