Changing States of Matter

Water can either be a solid, a liquid or a gas. How does matter change state?

Chemistry - Atoms And Bonding - Learning Points.

Ice, liquid water and steam all consist of exactly the same molecules.

Evaporation occurs when the temperature rises enough to change a liquid to a gas.

Condensing occurs when a gas cools down below its boiling point to form a liquid.

Freezing occurs when a liquid is cooled enough to form a solid.
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