Types of Colloids

2. Gels
Gels are colloids that result from dispersing liquids in a solid medium. Examples of gels are jelly, jam, cheese, butter, and gelatin.

3. Foam
When the dispersed phase is gas and the dispersion medium is solid, a colloid called solid foam is formed. Rubber bands and pumice stones are examples of this type of colloid. Styrofoam, which is used as a packaging material, is another example of solid foam.

4. Emulsion
An emulsion is a colloid formed when both the dispersed phase and the dispersion medium are liquids. Examples of this type of colloid are milk, hair cream, and mayonnaise.