Colloids are heterogeneous mixes of two substances in chemistry that have minute particles of one component scattered throughout another substance. The term "dispersion medium" refers to the material in which the tiny particles are suspended. The term "dispersed phase" refers to the mixture in which the particles are dispersed. For instance, the dispersed phase of fog is water (liquid), while the dispersion medium is a variety of gases. Because they are so minute, particles of A Tyndall effect are evident. It indicates that it disperses the light beam and makes its route through itself visible. When left alone for a while, they don't calm down. Thus, colloidal solutions are very stable. No amount of filtering can separate them. By using centrifugation, they may be separated. Brownian motion is seen in colloidal particles.