Question

give reason. the density of substance decreases with the increase in its temparature​

Answer 1

When a substance is heated its volume increases and so the density decreases. In solids, increase in volume is negligible and hence decrease in density too. In liquids and gases, as the temperature increases, volume increases and therefore density decreases considerably.

Answer 2

Answer:

Density changes with temperature because volume changes with temperature. ... 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.

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