2023 CP4 Unit 8 gas laws

According to the kinetic-molecular theory, what is the most significant difference between gases and liquids?

• the shapes of the particles

• the mass of each particle

• the distance between the particles

• the type of collision that occurs between particles

If a gas with an odor is released in a room, it quickly can be detected across the room because it

• diffuses.

• is compressed.

• is dense.

• condenses.

What happens to the volume of a gas during compression?

• The volume increases.

• The volume decreases.

• The volume remains constant.

• It is impossible to tell because all gases are different.

What does the constant bombardment of gas molecules against the inside walls of a container produce?

• emperature

• density

• diffusion

• pressure

What is the definition of pressure?

• pressure = force/area

• pressure = area/force

• pressure = force x area

• pressure = force/area²

What instrument measures atmospheric pressure?

• barometer

• vacuum pump

• manometer

• torrometer

A pressure of 745 mm Hg equals

• 1 torr.

• 745 torr.

• 745 atm.

• 1 atm.

Convert the pressure 0.75 atm to mm Hg.

• 430 mm Hg

• 760 mm Hg

• 101.325 mm Hg

• 570 mm Hg

Standard temperature is exactly

• 100ºC.

• 0ºC.

• 0 K.

• 273ºC.

Standard pressure is exactly

• 101.325 atm

• 1 atm

• 101 atm

• 760 atm