1.6 Evaporation And Condensation Flashcards
Why does evaporation take place?
Because the most energetic liquid molecules collide very hard, become very spread out and escape from the liquids surface and enter the air
Why does evaporation cause cooling?
The average kinetic energy of the remaining molecules is less, as the most energetic are now a gas. Therefore the temperature decreases
Name 3 things to increase the rate of evaporation
- increasing the surface area of the liquid
- increasing the temperature of the liquid
- creating a draught of air across the liquids surface
What effect would decreasing the surface area of a liquid have on its rate of evaporation?
It would decrease the rate of evaporation
What is condensation?
When a gas turns into a liquid
Where does condensation often take place?
On cold surfaces, such as windows and mirrors
Name 2 ways to increase the rate of condensation
- increase the surface area
* reduce the surface temperature
What effect would decreasing the surface area of a liquid have on its rate of condensation?
Decrease the rate of condensation
What is evaporation?
Where a liquid turns into a gas
