Kinetic Molecular Theory - Basics

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 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

Tags

NGSS.HS-PS3-2

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

• O₂

• H₂O

• H₂

• Xe

Tags

NGSS.HS-PS3-2

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

• high pressure

• high temperature

• low compressibility

• low expansion

Which gas deviates the most from ideal behavior?

• CH₄

• H₂O

• Cl₂

• He

• Gas particles are elastic and do not attract each other.
• The kinetic energy of gas is dependent on temperature 
• Energy is not lost when gas particles collide with each other or with the walls of the container.
• All of the above

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-2

Pressure is caused by ______.

• gravity.
• gas molecules colliding with each other.
• gas molecules colliding with surfaces of the container.
• gas molecules reacting with each other.

The movement of gas molecules is greatly affected by _________.

• the shape of the container
• size of the container
• temperature of the container

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-4

Of these three states of matter, which one has the most kinetic energy?

• Solid

• Liquid

• Gas