Colloid Colloid is a heterogeneous mixture of two or more substances in which particles of a substance measuring between 1 and 1000 nm are dispersed (dispersed) evenly in the medium of another substance. Substances dispersed as particles are called dispersed phases, whereas the substance into the medium disperses the particles called the dispersing medium. Colloid is a dispersion system whose particle size is larger than the solution, but smaller than the suspension (crude mixture) (Retnowati, 2008: 141). The colloids consist of two forms, the dispersed phase (dispersed agent) and the dispersing medium (the medium used for dispersing) (Kamaludin, 2010: 422). Macroscopically, the colloid looks like a solution, in which a homogeneous mixture of solutes and solvents is formed. However, microscopically, it looks like a suspension, a heterogeneous mixture in which each of the mixed components tends to separate each other. The color in the paint comes from the color of the pig...