According to the kinetic molecular theory, what happens to the motion of gas particles as the temperature increases?

• A. The particles move slower and their average kinetic energy decreases.
• B. The particles move faster and their average kinetic energy increases.
• C. The particles stop moving completely.
• D. The particles become larger in size.

Answer: (B)

Verified step by step guidance

1. Recall the kinetic molecular theory, which explains the behavior of gas particles in terms of their motion and energy.
2. Understand that temperature is a measure of the average kinetic energy of the particles in a substance.
3. Recognize that as temperature increases, the average kinetic energy of gas particles also increases.
4. Know that an increase in kinetic energy means the particles move faster because kinetic energy is directly related to the velocity of the particles.
5. Conclude that with higher temperature, gas particles move faster and their average kinetic energy increases, which matches the correct answer.