States of Matter

Question 1

Describe the arrangement of particles in a solid.

Answer 1

• The particles in a solid are in a regular lattice arrangement.
• The particles don’t move around, but vibrate about their fixed positions.
• There are strong forces of attraction between the particles.
• The particles don’t have much energy.

Question 2

Describe the arrangement of particles in a liquid.

Answer 2

• The particles in a liquid are spaced randomly.
• The particles are free to move past each other but tend to stick together.
• There is some force of attraction between the particles.
• The particles in a liquid have more energy than the ones in a solid, but less than the ones in a gas. The hotter a liquid gets, the more energy it acquires.

Question 3

Describe the arrangement of particles in a gas.

Answer 3

• The particles are randomly spaced out far apart from each other.
• The particles move quickly in straight lines and only interact when they collide.
• There’s nearly no force of attraction between the particles.
• The particles have a lot of energy. The hotter they get, the more energy they acquire.

Question 4

What is the process of changing from a solid to a liquid?

Answer 4

Melting.

Question 5

What is the process of changing from a liquid to a gas?

Answer 5

Evaporating.

Question 6

What is the process of changing from a gas to a liquid?

Answer 6

Condensing.

Question 7

What is the process of changing from a liquid to a solid?

Answer 7

Freezing.

Question 8

What is the process of changing from a solid to a gas?

Answer 8

Subliming.

Question 9

What is the process of changing from a gas to a solid?

Answer 9

Depositing.