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 changes in temperature or pressure.

Front

What are the main phases of matter?

Back

The main phases of matter are solid, liquid, gas, and plasma.

Front

What happens to the kinetic energy of particles during a phase change?

Back

The kinetic energy of particles changes during a phase change; it remains constant during certain segments (e.g., during melting or freezing) but increases or decreases when transitioning between phases.

Front

What is melting?

Back

Melting is the phase change from solid to liquid, occurring when a substance absorbs heat.

Front

What is freezing?

Back

Freezing is the phase change from liquid to solid, occurring when a substance loses heat.

Front

What is boiling?

Back

Boiling is the phase change from liquid to gas, occurring when a liquid reaches its boiling point.

Front

What is condensation?

Back

Condensation is the phase change from gas to liquid, occurring when a gas cools down.

Front

What happens to particles during melting?

Back

During melting, particles gain energy, move faster, and overcome the forces holding them in a fixed position.

Front

What happens to particles during freezing?

Back

During freezing, particles lose energy, slow down, and are held closely together in a fixed arrangement.

Front

What is the relationship between temperature and kinetic energy?

Back

As temperature increases, the kinetic energy of particles increases, causing them to move faster.