Gas Pressure

•What is gas pressure ?

•What causes gas pressure?

•What are the factors which
affect gas pressure?

Gas pressure is
the force that a
gas exerts on
the walls of its

container.

Gas pressure is caused by

the constant movement of

gas particles, which collide

with each other and with the

walls of their container.

Multiple Choice

Gas pressure is caused by

• Gas molecules colliding with each other and walls of container

• Gas molecules not moving

Multiple Choice

How do gas molecules move? 

• in an orderly fashion 

• constantly and randomly

• in a circular motion

Multiple Choice

True or False: Gases can be compressed. 

• True

• False

Multiple Choice

The reason gases can be compressed is because:

• The particles are very close together.

• The particles are merely vibrating.

• The particles are unable to move.

• The particles are very far apart.

Multiple Choice

The air in a balloon is a type of _____.

• solid

• gas

• liquid

Factors affecting Gas pressure

The pressure of a gas is affected by several factors, including:

❖Temperature: As temperature increases, gas particles gain kinetic

energy to move faster and collide more frequently, increasing the
pressure.

❖Volume: As the volume of a gas decreases, the gas particles

become more crowded and collide more frequently, increasing the
pressure.

❖Number of particles: As the number of gas particles increases, the

gas particles become more crowded and collide more frequently,
increasing the pressure.

Multiple Choice

We can increase the pressure of a gas by:

• Not changing the temperature of the gas

• Decreasing the temperature of the gas

• Increasing the temperature of the gas

Multiple Choice

Which container will have a lower pressure?

• left

• right

• they both have the same pressure

Multiple Choice

If a balloon is cooled what will happen to the volume?

• Volume will increase

• Volume will decrease

• Volume will not change

Multiple Choice

When the temperature of matter increases the particles...

• speed up and move closer

• speed up and move farther apart

• slow down and move closer together

• slow down and move farther apart

Multiple Choice

What is the difference between particles in a gas and a solid?

• gas particles are closer together

• solid particles move faster than gas particles

• solid particles expand on heating

• gas particles have more kinetic energy than solid particles

Multiple Choice

The pressure of the gas in the balloon in the ice water will be:

• Greater than that of the balloon in the boiling water.

• Less than that of the balloon in the boiling water.

• The same as that of the balloon in the boiling water.

Multiple Choice

The pressure inside the balloon will:

• Decrease

• Increase

• Remain the same

•What is gas pressure ?

•What causes gas pressure?

•What are the factors which
affect gas pressure?

Multiple Choice

Gas pressure is caused by

• Gas molecules heating up

• Gas molecules reacting with other gas molecules

• Gas molecules hitting the walls of a container

• Gas molecules hitting other gas molecules

Multiple Choice

How can we increase the gas pressure inside a sealed container?

• Increase the number of particles inside the container

• Increase the temperature

• Decrease the volume of the container

• All of these

Multiple Choice

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

• The pressure will increase

• The pressure will decrease

• The pressure will remain constant

• The pressure will equalize

Multiple Choice

Which of the following would increase the (gas) pressure of a system?

• Increase the Temperature

• Pump in more gas

• Decrease the volume

• All of these

Multiple Choice

What happens to the volume of the balloon if the temperature increased ?

• The volume will increase

• The volume will decrease

• There will be more energy

• There will be less gas pressure

Multiple Choice

A sample of a gas in a cylinder is shown. If the temperature is kept constant and the piston moves down to decrease volume, the pressure increases because the gas particles...

• Expand

• Become smaller

• Lose velocity within the container

• Collide more often within the container

Multiple Choice

If a balloon is cooled what will happen to the volume?

• Volume will increase

• Volume will decrease

• Volume will not change

Multiple Choice

As pressure goes up, volume 

• goes down.

• goes up.

• stays the same