PH-1706
Particle motion
Physics · Secondary 4 · Medium · Particle motion
A sealed container of gas is heated from 20 °C to 80 °C. The volume of the container remains constant. According to the kinetic particle model, what happens to the gas molecules?
- Their average kinetic energy increases and they collide with the walls more frequently.
- Their average kinetic energy decreases and they collide with the walls less frequently.
- They expand in size and the spaces between them become smaller.
- They stay the same speed but collide with the walls less frequently.
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