Kinetic Molecular Theory

The more energy that particles have, the ___ they move.

• slower

• faster

What happens to matter as its temperature increases?

• The average kinetic energy of its particles decreases

• The average thermal energy of its particles decreases

• The particles gain kinetic energy

• The particles lose potential energy

At what temperature do nitrogen molecules move fastest?

• 350 K
• 300 K
• 250 K
• 200 K

1. Kinetic refers to _______________

• Force

• Energy

• Motion

• Acceleration

Which of the following states of matter has the lowest kinetic energy? 

• solid
• liquid 
• gas

The slower the particles in a substance move,

• the colder it is.
• the warmer it is.
• the more energy it has.
• the less energy it has.

What best describes the kinetic energy of 2 gas particles before and after a collision?

• The total kinetic energy of 2 particles are the same

• The kinetic energies of both particles stay the same

• The kinetic energies of both particles decrease

• The kinetic energies of both particles increase

Liquid has a definite ___________, but a variable _____________.

• shape, volume
• mass, area
• smell, taste
• volume, shape

Gas 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.

Which type of motion in the figure best represents the movement of gas particles?

• Motion 1

• Motion 2

• Motion 3

• Motion 4