Energy and Phase Changes

Front

What is the process called when a liquid changes into a solid?

Back

Freezing

Front

What happens to particles when thermal energy is removed?

Back

Particles move closer together and slow down.

Front

What occurs when a substance melts?

Back

Particles go from a fixed position to being able to slide past one another.

Front

What is an example of vaporization?

Back

Water boiling.

Front

Which phase of matter has the strongest intermolecular forces?

Back

Solid.

Front

What is condensation?

Back

The process where a gas changes into a liquid.

Front

What is evaporation?

Back

The process where a liquid changes into a gas.

Front

What is the term for the energy required to change a substance from solid to liquid?

Back

Heat of fusion.

Front

What is the term for the energy required to change a substance from liquid to gas?

Back

Heat of vaporization.

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature remains constant during a phase change.