Physics
Chemistry
Acids and Bases

What is a phase change?

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November 15, 2012 12:48AM

A phase change is when matter changes into another form but keeps its properties.

For example, ice melting into water is an example of the phase change melting.

The main types of phase changes are melting, vaporization, freezing and condensation.

- Melting is when a solid turns into a liquid.

- Freezing is when a liquid turns into a solid.

- Vaporization is when a liquid turns into a gas. Boiling is a form of vaporization when the change takes place throughout the liquid. Evaporation is a form of vaporization in which the phase change takes place only at the top of the liquid.

- Condensation is when a gas turns into a liquid.

- There is also sublimation, which is when a solid turns directly into a gas.

- Deposition is when a gas turns directly into a solid.