10.1-10.2 KMT & Liquids

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

• a real gas.

• an ideal gas.

• an imaginary gas.

• a perfect gas.

Which of the following is NOT true about the volume of 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 to calculate the kinetic energy, KE, of a moving particle?

• KE = 1/2mv²

• KE = 2mv

• KE = mv

• KE = 1/2m²V

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 of 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