B. The particles move faster, and their average kinetic energy increases.
Hope this helps :))
The sample of gas particles as the temperature decreases particles move slower, and their average kinetic energy decreases. option C is correct.
Every matter in this universe consist of small particles and gas also have small particles which are spherical in shape and collide with each other to move in zig zag form.
As temperature decreases the particles will move slow because of low energy as temperature is the source of energy for them and the collision between them also decreases due to which kinetic energy will also decreases.
On increasing the temperature the gas molecules move fast and kinetic energy will also be more.
Therefore, sample of gas particles as the temperature decreases particles move slower, and their average kinetic energy decreases. option C is correct.
Learn more about gas molecules, here :
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