Particle Motion in Two Dimensions

Particle Motion in Two Dimensions

Read each question carefully and answer to the best of your ability. Refer to the diagram of particle motion in different states of matter to help you answer some questions.

Observe the diagram below showing particle arrangements in different states of matter.

1. In which state of matter do particles have the most freedom to move past each other?

2. What happens to the motion of particles in a substance when it is heated?

1. In a solid, particles are arranged in a fixed   and vibrate in place.

2. Liquids have a definite volume but take the   of their container.

3. Gas particles move   and are far apart from each other.

1. Particles in a gas have less kinetic energy than particles in a solid at the same temperature.

2. When a liquid freezes, its particles gain kinetic energy and move more freely.

1. Describe the main difference in particle motion between a liquid and a gas.

2. Explain how adding heat energy affects the motion of particles in a solid.