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QuizMultiple Choice

Heat — Quiz

Question 1 • Chemistry

The temperature of a gas is increased. Which statement best explains the effect that this has on the motion of gas particles?

Answer
A
The average kinetic energy decreases, and the particles stop colliding.
B
The average kinetic energy increases, and the particles stop colliding.
C
The average kinetic energy increases, and the particles collide more frequently.
D
The average kinetic energy decreases, and the particles collide less frequently.

Explanation

Temperature measures the average kinetic energy of gas particles, so increasing the temperature increases their average kinetic energy. The particles move faster and, in the same space, collide more frequently. Thus, the correct choice is A: the average kinetic energy increases, and the particles collide more frequently.

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