1.6 - Evaporation and condensation Flashcards
1
Q
What process is evaporation?
A
A liquid turning into a gas
2
Q
Describe the process of evaporation (2)
A
- The most energetic liquid molecules escape from the liquid’s surface
- They enter the air, thus taking on the properties of a gas
3
Q
Why does evaporation cause cooling?
A
After the most energetic molecules leave, the average kinetic energy of the remaining molecules is less, so the temperature decreases
4
Q
What are three ways you can increase the rate of evaporation?
A
1) Increasing the surface area of the liquid
2) Increasing the temperature of the liquid
3) Creating a draught of air across the liquid’s surface
5
Q
What is the process of condensation?
A
A gas turning into a liquid
6
Q
Where does condensation usually take place?
A
On cold surfaces, like windows and mirrors
7
Q
What are two ways you can increase the rate of condensation?
A
- increasing the surface area
- reducing the surface temperature
