Phase Changes

Front

What is a phase change?

Back

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

Front

What are the three main states of matter?

Back

The three main states of matter are solid, liquid, and gas.

Front

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

Back

When a solid is heated, its particles gain thermal energy and vibrate more vigorously.

Front

What is condensation?

Back

Condensation is the process by which a gas turns into a liquid when it cools down.

Front

What is sublimation?

Back

Sublimation is the phase change in which a solid turns directly into a gas without becoming a liquid first.

Front

What is deposition?

Back

Deposition is the process where a gas turns directly into a solid without passing through the liquid phase.

Front

How do the particles in a liquid behave compared to those in a solid?

Back

Particles in a liquid move more freely than those in a solid, allowing liquids to flow and take the shape of their container.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter; it is the total kinetic energy of particles in a substance.

Front

Which state of matter has a definite shape and volume?

Back

Solid has a definite shape and volume.

Front

What is the process of melting?

Back

Melting is the phase change from solid to liquid, occurring when a solid absorbs enough thermal energy.