Phase Changes

Front

What is condensation?

Back

Condensation is the process where a gas turns into a liquid, releasing heat in the process. It is an example of an exothermic change.

Front

What is melting?

Back

Melting is the phase change where a solid turns into a liquid.

Front

What is the name of the phase change from solid to liquid?

Back

The phase change from solid to liquid is called melting.

Front

What is evaporation?

Back

Evaporation is the process where a liquid turns into a gas, absorbing heat in the process.

Front

What is boiling?

Back

Boiling is the rapid vaporization of a liquid, which occurs when it reaches its boiling point. It is an endothermic change.

Front

What is freezing?

Back

Freezing is the phase change where a liquid turns into a solid.

Front

What is sublimation?

Back

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

Front

What is the difference between endothermic and exothermic changes?

Back

Endothermic changes absorb heat from the surroundings, while exothermic changes release heat.

Front

What happens during a phase change?

Back

During a phase change, a substance changes its state (solid, liquid, gas) without changing its chemical composition.

Front

What is the boiling point?

Back

The boiling point is the temperature at which a liquid turns into a gas.