Colloids

Milk is a colloid. A homogeneous mixture of fluids that are not miscible. When a ball made up of the molecules of the fluid that appears in lesser proportions forms, such that each molecule is oriented in the same direction away from a central point at the center of the ball, the sphere that is formed is called a micelle. Milk is not a suspension. A suspension has nonuniform distribution of particles in liquid, and will eventually form an emulsion. A good example of a suspension is a snow globe after it has been shaken vigorously.