Kinetic Molecular Theory

A hypothetical gas that perfectly fits all the assumptions of the kinetic molecular theory is known as

• real gas

• ideal gas

• imaginary gas

• perfect gas

Which of the following is not true about the volume of a gas?

• Most of the volume is empty space.

• The volume is occupied by particles in continuous, rapid, random motion.

• The volume is about 10 times greater than that occupied by an equal number of particles in the liquid or solid state.

• Generally, the volume can be easily changed

Which of the following is an assumption of the kinetic-molecular theory of gases?

• Collisions between gas particles are inelastic.

• Gases consist of closely spaced particles.

• Gas particles move around in an orderly manner.

• The temperature of a gas depends on the average kinetic energy of the gas particles.

Which of the following is the equation needed to calculate the kinetic energy, KE, of a moving particle?

• KE = 1/2 mv²

• KE = 2mv

• KE = mv

• KE = 1/2 m²v

If a gas has the same temperature throughout, which gas molecule has the highest average velocity?

• O₂

• H₂O

• H₂

• Xe

Which condition is necessary for most gases to behave nearly ideally?

• high pressure

• high temperature

• low compressibility

• low expansion

Which of the following is not a physical property of gases?

• absence of definite volume

• large density

• high compressibility

• fluidity

Rates of effusion of different gases are proportional to their...

• polarity.

• particle charge.

• particle velocities.

• compressibility.

Which states of matter are fluid?

• gases and liquids

• liquids and solids

• gases only

• liquids only

Which gas deviates the most from ideal behavior?

• CH₄

• H₂O

• Cl₂

• He