Before class, students were distributed throughout a classroom. When the bell rang, all the students sat down at three tables in the center of the room. The entropy of the class ________
A)increased.
B)decreased.
C)remained the same.
D)cannot be determined.
E)is irrelevant.

Question

Quizplus · Accepted Answer

The entropy of the class decreased because the students went from a state of being spread out (higher disorder) to a state of being concentrated at three tables (lower disorder). Entropy is a measure of disorder or randomness, and gathering in a smaller area represents a decrease in entropy.

Before Class, Students Were Distributed Throughout a Classroom