Gas Laws Review

Boyle’s Law states that if you increase the volume of a gas the pressure will:

• Increase

• Decrease

• Stays the Same

Each of the flasks to the right contains the same number of gas molecules at a different temperature. In which container is the pressure the lowest?

• Flask 1

• Flask 2

• Flask 3

• Flask 4

Charles’ Law states that if you increase the temperature of a gas at constant pressure, the volume will:

• Increase

• Decrease

• Stay the same

A gas occupies 10 L at a pressure of 3 atm. What is the volume when the pressure is increased to 5 atm?

• 150L

• 18L

• 15L

• 6L

Chlorine gas occupies a volume of 25 mL at 300 K. What volume will it occupy at 600K?

• 12.5 mL

• 24mL

• 50mL

• 120mL

Gay Lusaac’s Law states that if you increase the pressure of a gas with volume remaining constant, the temperature will

• Increase

• Decrease

• Stay the same

Each of the flasks to the right is the same size and at the same temperature. Which one contains the most molecules?

• Flask 1

• Flask 2

• Flask 3

• Flask 4

If you take a Mylar balloon filled with helium and place it outside on a cold day, the balloon will begin to shrink in size. Explain why this is.

• Lowering the temperature makes the molecules move faster, which leads to a smaller volume.

• Lowering the temperature makes the molecules move slower, which leads to smaller volume.

• Raising the temperature makes the molecules move slower, which leads to a smaller volume.

• Nothing really happens to a Mylar balloon that experiences a temperature change.

Explain what will happen to the marshmallow in the syringe in Figure 1.2 when the plunger is pushed in.

• Increase

• Decrease

• Stays the same

• Disappears

Kinetic-molecular theory explains that:

• molecules of gases are in continual motion

• molecules of gases move in straight lines

• molecules of gases are far apart and move independently of one another

• All of these