To understand the process of evaporation.
Evaporation is the process by which water changes from a liquid to a gaseous state. While the boiling temperature of water is 100 degrees Celsius, it evaporates very slowly at 0 degrees Celsius. When the temperature rises, the rate of evaporation increases with it. However, the rate at which water evaporates varies depending on the temperature and the amount of water that needs to be evaporated. Hence, the phenomenon of change of a liquid into vapours (gases) at any temperature below its boiling point is called evaporation. The preparation of common salt, drying wet clothes, meat, fish, hair in the sun, ironing of cloth are examples of evaporation. Evaporation is a basic purification method used in our day-to-day life. Condensation is the process by which the vapour or gaseous state of water is converted to a liquid state; it is the opposite of evaporation.
When a liquid is heated, it evaporates. This implies that the molecules in the liquid should acquire kinetic energy. When the kinetic energy is gained, the molecules of a liquid expand and vibrate more rapidly. As a result, the liquid changes its state of matter from liquid to gas.
Another thing to keep in mind is that evaporation is a slow process that can be increased or slow down by external factors. The various factors that affect the rate of evaporation are temperature, surface area, wind speed and humidity.