Gas Laws Quiz

What is going to happen to the volume of a gas that is put under MORE pressure while keeping the temperature constant?

• The volume will increase

• The volume will decrease

• The volume will fluctuate

• The volume will remain constant

Carlos measured the tire pressure of his truck that was parked outside after a cold night. The daytime temperature reached a nice 65° F. Assume Carlos' tires do not have any leaks. Explain the change in tire pressure.

• The air molecules heated inside the tire causing them to move faster, exerting more pressure on the inside walls of the tire.

• The air molecules heated inside the tire causing them to move faster, exerting less pressure on the inside walls of the tires.

• The air molecules heated inside the tire causing them to move slower, exerting more pressure on the inside walls of the tires.

• The air molecules heated inside the tire causing them to move slower, exerting more less on the inside walls of the tires.

Linda inflates and ties off a balloon in her classroom and then takes it outside on a cold, winter day. Within 10 minutes, she notices that the balloon has gotten a little smaller. Why does this occur?

• Because there are fewer molecules in the balloon in the colder, outside air

• Because the air pressure is significantly higher when it is colder

• Because the molecules in the balloon have slowed down with the decreased temperature

• Because the molecules shrink in size when exposed to the colder, outside air

Why do the air molecules inside a bicycle tire speed up as the temperature gets warmer?

• Because the heat is transferred to the molecules and gives them more kinetic energy

• Because the warmer air allows the particles to be free from gravitational forces

• Because the heat liberates the potential energy inside each molecule

• Because the warmer air is less dense and particles can move more

How will the behavior of the gases in the piston chamber change if heat is applied to the system? Assume the piston moves to keep the pressure constant.

• The gas particles will increase in speed

• More gas particles will be produced

• Fewer gas particles will be produced

• The kinetic energy will decrease

When the burner in a hot air balloon is turned on, the temperature of the air in the balloon __________________, causing its volume to ____________, and the balloon to ___________________.

• Decreases, expand, sink

• Increases, expand, rise

• Decreases, contract, rise

• Increases, contract, sink

If the pressure of a sample of gas is doubled at a constant temperature, what happens to the volume of the gas?

• The volume doubles

• The volume quadruples

• The volume is halved

• The volume remains constant

Demarius was given a marshmallow and a syringe in class to experiment with. She placed the marshmallow in the syringe and sealed the end. When she decreased the pressure inside of the syringe, what happened to the marshmallow and why?

• Nothing happened, as there is no relationship between pressure and the size of the marshmallow

• The decreased pressure pushed the molecules closer together and caused the marshmallow to shrink

• The decreased pressure created an increase in temperature and the marshmallow expanded

• The decreased pressure allowed the molecules to spread apart and caused the marshmallow to grow larger

Given the diagram showing gas molecules in different containers, a reasonable inference could be made that there is a relationship between ____________________________.

• Volume and pressure

• Temperature and volume

• Temperature and density

• Pressure and temperature

Explain why a balloon expands when taken to a higher elevation if the temperature remains constant?

• The decrease in atmospheric pressure (relative to pressure inside the balloon) causes it to expand

• The decrease in atmospheric pressure allows the balloon wall to become more elastic

• The increase in atmospheric pressure pushes the walls of the balloon outward, thus making it larger

• The increase in atmospheric pressure forces the gases to push harder on the balloon increasing its size