9.3 Gas Behavior

What unit is pressure measured in?

• Pascals (Pa)

• Atmospheres (atm)

• Millimeters of mercury (mmHg)

• Pounds per square inch (psi)

Describe how gas behavior can be affected by changes in external conditions such as temperature and pressure.

• Gas behavior is influenced by changes in temperature and pressure, which can alter volume, density, and pressure according to gas laws.

• Gas behavior remains constant regardless of temperature and pressure changes.

• Increasing temperature always increases gas density regardless of pressure.

• Pressure changes do not affect the volume of gas in a closed container.

How does a decrease in volume affect the density of a gas?

• A decrease in volume increases the density of the gas.

• A decrease in volume decreases the density of the gas.

• A decrease in volume has no effect on the density of the gas.

• A decrease in volume makes the gas less dense.

What happens to the volume of a gas at constant pressure when the temperature decreases?

• The volume of the gas increases.

• The volume of the gas remains the same.

• The volume of the gas decreases.

• The volume of the gas becomes zero.

What is Charles's Law regarding gas behavior?

• Charles's Law states that at constant pressure, the volume of a gas is directly proportional to its temperature in Kelvin.

• Charles's Law states that at constant volume, the pressure of a gas is directly proportional to its temperature in Kelvin.

• Charles's Law states that the volume of a gas decreases as the pressure increases at constant temperature.

• Charles's Law states that the temperature of a gas is inversely proportional to its volume at constant pressure.

Define Boyle's Law in relation to gas behavior.

• Boyle's Law states that at constant temperature, the pressure of a gas is inversely proportional to its volume.

• Boyle's Law states that at constant pressure, the volume of a gas is directly proportional to its temperature.

• Boyle's Law states that the volume of a gas increases as the pressure increases at constant temperature.

• Boyle's Law states that the pressure of a gas is directly proportional to its volume at constant temperature.

At constant temperature, what happens to the pressure of a gas when its volume is decreased?

• The pressure decreases.

• The pressure remains the same.

• The pressure increases.

• The pressure fluctuates.

What occurs to the air pressure in a bicycle pump when the handle is pushed down?

• The air pressure within the pump decreases.

• The air pressure within the pump remains the same.

• The air pressure within the pump increases.

• The air pressure within the pump becomes negative.

Explain the concept of absolute zero in relation to gas behavior.

• Absolute zero is the temperature at which a gas has maximum volume and pressure.

• Absolute zero is the theoretical temperature at which a gas would have zero volume and pressure, corresponding to 0 Kelvin.

• Absolute zero is the temperature at which all gases become liquids.

• Absolute zero is the temperature at which gas molecules move at their maximum speed.

What effect does heating air in a sealed room have on the air pressure?

• The air pressure decreases.

• The air pressure remains the same.

• The air pressure increases.

• The air pressure fluctuates.