Question

State any two factors that affect evaporation.
[2 Marks]

Answer 1

Two factors tha affect evaporation are:

(i) Surface area of the liquid :
The evaporation depends upon the surface area. If the surface area is increased, the rate of evaporation increases because more number of particles will be exposed from the surface of liquid and get converted to the gaseous state easily.
[1 Mark]

(ii) Temperature:
Rate of evaporation increases with increase in temperature. This is because with the increase in temperature, more number of particles get enough kinetic energy to go into the vapour state (or gaseous state).
[1 Mark]