Gas Pressure

Select the correct state these particles are in.

• solid

• liquid

• gas

Suggest how quickly the particles are moving.

• slowly

• not quickly

• quickly

• very quickly

Suggest why the particles are moving quickly.

• They have no energy.

• They have some energy.

• The have a little bit of energy.

• They have lots of energy.

Identify the type of energy the particles have.

• kinetic

• electrical

• thermal (heat)

• chemical (stored)

Select how the gas partices behave in a container like a balloon.

• They take the shape of the top of the container.

• They take the shape of the bottom of the container.

• They take the shape of the middle of the container.

• They take the shape of the whole container.

Suggest what happens if more gas particles are added to the balloon.

• The balloon expands (gets bigger).

• The balloon contracts (gets smaller).

• The balloon stays the same size.

• The balloon shrinks.

Explain why the balloon expands.

• Pressure inside the balloon increases as particles push against the edge of the container.

• Pressure inside the balloon decreases as particles push against the edge of the container.

• Pressure outside the balloon increases as particles push away from the edge of the container.

• Pressure inside the balloon increases as particles push against the middle of the container.

Suggest what would happen if the air in the balloon was heated.

• It would expand.

• It would contract.

• It would stay the same.

• It would shrink.

Explain why the balloon expands when it is heated.

• Particles lose kinetic energy, move faster and push against the edges of the balloon.

• Particles gain kinetic energy, move faster and push against the edges of the balloon.

• Particles lose kinetic energy, move faster and push against the middle of the balloon.

• Particles gain kinetic energy, move slowerand push against the edges of the balloon.

Suggest one reason why the balloon might pop.

• Pressure inside it decreases and particles move closer together.

• Pressure inside it decreases and particles move further apart.

• Pressure inside it increases and particles move closer together.

• Pressure inside it increases and particles move further apart.