Question

Differentiate micelles from multimolecular colloids and give example of each.

Answer 1

Points	Micelles	Multimolecular colloids
Formation	Micelles are formed by the association of surfactant molecules (such as soap or detergent) in water above a certain concentration called critical micelle concentration (CMC).	Multimolecular colloids are formed by the aggregation of atoms or smallermolecules without any chemical bonding.
Structure	Micelles have a spherical structure with hydrophobic tails inward and hydrophilic heads outward in aqueous medium.	Multimolecular colloids consist of clusters of many small molecules or atoms held together by van der Waals forces.
Existance	Micelles exist only above the critical micelle concentration (CMC).	Multimolecular colloids exist once the particles aggregate to colloidal size.
Nature of molecules	Micelles are formed from amphiphilic molecules (having both hydrophobic and hydrophilic parts).	Multimolecular colloids are formed from non-amphiphilic small particles or atoms.
Example	Soap in water (e.g., sodium stearate) forms micelles.	Sulphur sol and gold sol are examples of multimolecular colloids.