Asolid is cooled to a very low temperature. assuming the mass remains constant, how, (if at all), does this affect the density of the solid?

Most solid substances (all of them that I can think of)
contract (shrink) when they get cold.

         Density  =  (mass) / (volume)

If mass doesn't change but volume gets smaller,
then density increases.

When the solids reduce their temperature, usually happens a volume contraction, it means that the volume of the solid decreases.

Now, the density of something is defined as : D = .

Then if the mass remains constant, and the volume gets smaller, the density of the solid gets bigger.

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