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SAT® Subject Test in Physics

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Solidifying a Substance

SATPHY-3MKY7C

Substance $X$ has a higher latent heat of fusion than substance $Y$. As a liquid, substance $X$ has a lower specific heat than substance $Y$.

We start with the same mass of each substance in the liquid form. Each substance is above its freezing temperature by the same amount. We remove heat from each uniformly at exactly the same rate.

Which substance completely changes to a solid first, and why?

A

Substance $X$ because it has a higher latent heat of fusion.

B

Substance $Y$ because it has a higher specific heat.

C

Substance $X$ because it has a lower specific heat.

D

Substance $Y$ because it has a lower latent heat of fusion.

E

We do not have enough information to answer this question.