Zusammenfassung der Ressource
Evaporation and
Condensation
- Evaporation is when a liquid turns into a gas.
- Evaporation takes place because the
most energetic liquid molecules escape
from the liquid's surface and enter the air.
- Therefore the kinetic energy of the
remaining molecules is less, so the
temperature of the liquid decreases. This
means that evaporation causes cooling.
- The rate of evaporation can be increased by:
- Increasing the surface area of the liquid
- Increasing the temperature of the liquid
- creating a draught of air across the liquid's surface
- Condensation is when a gas turns into a liquid. This often
takes place on cold surfaces such as windows and mirrors.
- The rate of condensation is increased by:
- Increasing the surface area
- Reducing the surface temperature