Clouds are made up of tiny water droplets or ice crystals floating in the air. Based on what you know about solutions, suspensions and colloids, what type of mixture do you think clouds are and why? [Pg. No. 88]
Clouds are colloidal mixtures, more specifically aerosols, because tiny water droplets or ice crystals are dispersed in air. These particles are not dissolved in air, so clouds are not true solutions. They are small enough to remain suspended for some time and do not settle quickly like ordinary suspension particles. The droplets and ice crystals also scatter sunlight, showing the Tyndall effect, which makes clouds visible. When these droplets join together and become larger and heavier, they may fall as rain or snow.