5.11 Phase Changes & Molecular Motion Review

Front

What is a phase change?

Back

A phase change is a transition of matter from one state (solid, liquid, gas, plasma) to another due to changes in temperature or pressure.

Front

What are the four main phases of matter?

Back

Solid, Liquid, Gas, Plasma.

Front

What happens to particles in a solid?

Back

In a solid, particles are closely packed together and vibrate in fixed positions.

Front

What happens to particles in a liquid?

Back

In a liquid, particles are close together but can move past one another, allowing the liquid to flow.

Front

What happens to particles in a gas?

Back

In a gas, particles are far apart and move freely, filling the container they are in.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, related to temperature.

Front

What occurs during melting?

Back

During melting, a solid absorbs thermal energy and changes into a liquid.

Front

What occurs during freezing?

Back

During freezing, a liquid loses thermal energy and changes into a solid.

Front

What is evaporation?

Back

Evaporation is the process where liquid turns into gas at temperatures below boiling point.

Front

What is condensation?

Back

Condensation is the process where gas turns into liquid when it loses thermal energy.