Define Brownian motion .

The random motion of tiny particles in a fluid.

Define pressure , in the context of a gas.

The force exerted per unit area of the container.

The higher the temperature, the higher the average kinetic energy of the molecules, and vice versa.

The average speed of the molecules increases.

Molecules in a gas are in constant random motion at high speeds.

False. At a constant volume, increasing the temperature of a gas increases its pressure.

The molecules travel at a higher speed, so they collide with the container walls more often, creating an increase in pressure.

The walls of its container, and other molecules.

Exam code: 8464

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Define Brownian motion.
The random motion of tiny particles in a fluid.
Define pressure, in the context of a gas.
The force exerted per unit area of the container.
How is the temperature of a gas related to the average kinetic energy of its molecules?
The higher the temperature, the higher the average kinetic energy of the molecules, and vice versa.
What happens to the average speed of gas molecules as the temperature of the gas increases?
The average speed of the molecules increases.
Molecules in a gas are in constant ______ motion at high speeds.
Molecules in a gas are in constant random motion at high speeds.
True or False?
At a constant volume, increasing the temperature of a gas decreases its pressure.
False.
At a constant volume, increasing the temperature of a gas increases its pressure.
Why does heating a gas at constant volume increase its pressure?
The molecules travel at a higher speed, so they collide with the container walls more often, creating an increase in pressure.
Give two things that a gas molecule undergoing random motion can collide with.
The walls of its container, and other molecules.

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