PPT Slide
Colloids are suspensions of finely divided particles in a continuous medium that usually scatter light due to their cloudiness, also known as exhibiting the Tyndall Effect.
A sol is a dispersion of a solid substance in a fluid medium and a gel is a dispersion that has a structure that prevents it from being mobile. Jello is a sol when it is first prepared and it becomes a gel when the cooking is finished.
Gelatin is a colloidal dispersion or colloid, which is a state between a solution and a suspension.