Kinetic Molecular Theory

Gas pressure is caused by

• gas molecules colliding with surfaces
• gas molecules condensing to a liquid
• gas molecules hitting other gas molecule
• barometers

• Flask 1 contain the most molecules
• Flask 2 contain the most molecules
• Flask 3 contain the most molecules
• Flask 4 contain the most molecules

Tags

NGSS.MS-PS1-1

• Flask 1 contain the least pressure
• Flask 2 contain the least pressure
• Flask 3 contain the least pressure
• Flask 4 contain the least pressure

• Since all flask have same amount of gas, flask 1 has the least pressure
• Since all flask have same amount of gas, flask 2 has the least pressure
• Since all flask have same amount of gas, flask 3 has the least pressure
• Since all flask have same amount of gas, flask 4 has the least pressure

• Gases do not move in straight line
• Most of the volume of gas is empty space
• Gas particles are not in constant random motion
• Gas particles attract each other

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-5

• 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

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