CLASS 6 · LEARNING KNOWLEDGE
Evaporation and condensation – basic principles
How it works
Evaporation is the transition of a substance from the liquid to the gaseous state of matter. This happens at any temperature, but especially quickly when the boiling point is reached. Condensation is the reverse process: A gas becomes a liquid when it cools. Both processes are physical changes in which the substances do not change their chemical composition. The particles move faster during evaporation and move farther apart from one another; during condensation, they move closer together again.
Note
During evaporation, a substance changes from the liquid to the gaseous state, and during condensation from the gaseous to the liquid. Both processes are reversible and change only the state of matter, not the chemical composition.
During evaporation, a substance changes from the liquid to the gaseous state, and during condensation from the gaseous to the liquid. Both processes are reversible and change only the state of matter, not the chemical composition.
An example
What happens to the particles of a substance during evaporation?
During evaporation, the particles move faster and move farther apart from one another, so that the substance becomes gaseous.
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Chemistry. The topic assignment may vary by federal state.