SAT Subject Physics Practice Question 361: Answer and Explanation

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Question: 361

57. The density of any substance from the most dense phase to the least dense phase is

A. gas, liquid, solid
B. liquid, solid, gas
C. liquid, gas, solid
D. solid, gas, liquid
E. solid, liquid, gas

Correct Answer: E


The correct answer is (E). The atoms and molecules of a solid are packed together more tightly than they are in a liquid. Liquid particles are able to slide over one another, but they are still in contact. Gaseous atoms and molecules have gained enough energy to move away from one another.

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