Phase Changes

Front

What is a phase change?

Back

A phase change is a transition of matter from one state (solid, liquid, gas) to another due to the addition or removal of energy.

Front

What happens to the energy of a substance during vaporization?

Back

During vaporization, a substance gains energy as it changes from a liquid to a gas.

Front

What is condensation?

Back

Condensation is the phase change from a gas to a liquid, where the substance loses energy.

Front

Define sublimation.

Back

Sublimation is the phase change from a solid directly to a gas without passing through the liquid state.

Front

What occurs during melting?

Back

During melting, a solid gains energy and changes into a liquid.

Front

What is freezing?

Back

Freezing is the phase change from a liquid to a solid, where the substance loses energy.

Front

Explain deposition.

Back

Deposition is the phase change from a gas directly to a solid without becoming a liquid.

Front

What is the role of temperature in phase changes?

Back

Temperature affects the energy of particles; increasing temperature can lead to phase changes like melting and vaporization, while decreasing temperature can lead to freezing and condensation.

Front

What is the difference between evaporation and boiling?

Back

Evaporation is a surface phenomenon that occurs at any temperature, while boiling occurs throughout the liquid at a specific temperature.

Front

What is the significance of the melting point?

Back

The melting point is the temperature at which a solid becomes a liquid, indicating a specific energy level for the substance.