Phase Changes Review

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 particles during melting?

Back

During melting, particles gain energy and move apart, transitioning from a solid to a liquid state.

Front

What is vaporization?

Back

Vaporization is the process where a liquid changes into a gas, usually by gaining heat energy.

Front

What is sublimation?

Back

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

Front

What is the relationship between temperature and pressure in gases?

Back

As the temperature of a gas increases, the pressure also increases if the volume is constant, due to faster-moving particles colliding more frequently with the walls.

Front

What occurs during condensation?

Back

Condensation is the process where gas particles lose energy and come together to form a liquid.

Front

What is molecular attraction?

Back

Molecular attraction is the force that pulls molecules together, affecting the state of matter.

Front

What happens to water molecules when water freezes?

Back

When water freezes, the molecules lose energy and move closer together, forming a solid structure.

Front

What is the boiling point of water?

Back

The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure.

Front

What is the difference between evaporation and boiling?

Back

Evaporation occurs at the surface of a liquid at any temperature, while boiling occurs throughout the liquid at a specific temperature.