Final

Which statement is correct about gases?

• Gases have high density.      

• Gases have high density and incompressibility.

• Gases take the volume and shape of their container.

• Gases have a definite volume and take the shape of their container.

An air pump is used to bring the original shape of a bicycle tire. What will happen to the tire when air is added to it?

• The tire will expand because its volume will increase.

• The air particles will leak out of the tire; thus, its volume will decrease.

• The shape of the tire will remain the same; thus, there will be no change in volume.

• The amount of air particles will increase; thus, the volume of the tire will increase.

At constant temperature, what happens to the pressure when the volume is doubled?

• It is halved.

• It is doubled.

• It remains unchanged.

• It cannot be predicted.

To use Boyle’s law, which of the following needs to remain constant?

• Pressure

•      Temperature

• Pressure and volume

•      Temperature and pressure

Boyle’s law: When _____ is held constant, the pressure and volume of a gas are _____ proportional.

• mass, equally

•      mass, inversely

• temperature, equally

•      temperature, inversely

According to Charles’ law, as the temperature of a given sample of gas at constant pressure increases, the volume _____.

• increases

• decreases

• remains the same

• cannot be predicted

What must remain constant if Charles’ law is to be applied to a given sample of a gas?

• Pressure

•      Temperature

• Pressure and volume

•      Temperature and pressure

What temperature scale must be used when applying Charles’ law?

• Kelvin

• Celsius

• Fahrenheit

• Any will do

To convert a Celsius temperature to Kelvin, you would ____.

• add 273

• subtract 273  

• not certain     

• do nothing as the two scales equivalent

According to Charles’ law, volume and temperature vary ____.

• directly

• inversely

• cannot be predicted

• proportionally to the square