Types of Colloid

Colloids can be grouped into two different types. The first type is called Lyophilic colloids. Colloids which are grouped in this type are colloids that are fused with it's dispersed medium. Ex. agar and gelatin because they are solid inside liquid. From this info, we can also say that agar and gelatin are also Hydrophobic colloids. Hydrophobic colloids are basically Lyophilic but the dispersed medium must be water.

The other type is Lyophobic colloids. The colloids that are grouped here are those who did not fused with it's dispersed medium. Ex. milk and cooking oil since they are liquid but can't fused with another liquid, say water. In Lyophobic colloids, there is a smaller group which we call Hydrophobic colloids. It is basically Lyophobic but the dispersed medium must be water. Ex. sulfur and iron sol