What is the difference between multimolecular and macromolecular colloids? Give one example of each. How are associated colloids different from these two types of colloids?
What is the difference between multimolecular and macromolecular colloids? Give one example of each.
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Multimolecular colloids: In this type of colloids, colloidal particles are aggregates of atoms or molecules each having size less than 1nm, e.g., sulphur sol, gold sol.
Macromolecular colloids: In this type of colloids, colloidal particles are themselves large molecules of colloidal dimensions, e.g., starch, proteins, polyethene, etc.
Associated colloids: There are certain substances which at low concentrations behave as normal electrolyte, but at higher concentrations exhibit colloidal behaviour due to the formation of aggregates. Such colloids are known as associated colloids, e.g., soaps and detergents.