A sample of gas is enclosed in a container of fixed volume. Identify which of the following statements are true. Check all that apply.

Temperature is proportional to the gas particles’ average kinetic energy. Cooling the gas lowers both its particles’ average kinetic energy and its temperature, so B is true. In a fixed-volume container, faster particles hit the walls more frequently and transfer more momentum in each collision, increasing pressure; therefore C and E are true. Heating does not make particles lose kinetic energy, and faster particles do not collide with the walls less often, so A and D are false.

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