U2C2 States of Matter & Phase Changes

Front

What is a gas?

Back

Matter that has no fixed shape and no fixed volume.

Front

Describe the particle motion in a gas.

Back

Particles in a gas have fast-moving motion and are widely spaced apart.

Front

What happens to the particles in a liquid when it is heated?

Back

They are moving faster.

Front

What is condensation?

Back

The process of gas changing to liquid.

Front

What is the state of matter with the greatest random motion of particles?

Back

Gas.

Front

What is the difference between a solid and a liquid in terms of particle arrangement?

Back

Solids have closely packed particles, while liquids have particles that are close but can move past each other.

Front

What is the definition of phase change?

Back

A transition of matter from one state to another, such as solid to liquid or liquid to gas.

Front

What occurs during the process of evaporation?

Back

Liquid changes to gas.

Front

What is the state of matter that has a definite shape and volume?

Back

Solid.

Front

What is sublimation?

Back

The process of a solid changing directly to a gas without becoming a liquid.