Page 1 - 3. Lesson note-Different types of colloids
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SAI International School
                                                Subject-Chemistry

                                         Ch-Is Matter around us pure?
                                       Topic-Different types of colloids
                                                  LESSON NOTE


               Classification of Colloids

               Colloids are classified into many types.


               Classification Based on Physical State of the dispersed phase and the Dispersion
               medium.

               (a) Solid Solution

               In this dispersed phase solid and the dispersion medium. Eg: gemstones.
               (b) Aerosol

               These colloids consist of air as the dispersion medium.

               Example 1: Cloud. This contains air as dispersion medium and water drops as the
               dispersed phase.
               Example 2: Dust. This contains air is dispersion medium and dent particle as the
               dispersed phase.

               Example 3: Smoke. This contains carbon particles in the air.
               (c) Gels

               These contain solid dispersion medium and liquid dispersed phase

               Example: Cheese, butter.
               (d) Emulsion

               These are liquid-liquid solutions in which the dispersed phase is liquid and liquid
               dispersed medium. Emulsion mainly consists of two aspects.
               Oil in water type:

               Oil is dispersed phase and water is dispersion medium

               Example: Milk
               Water in oil type:

               Water is the dispersed phase and oil/fat is dispersion medium.

               Example: Vanishing cream





               Colloid Table:
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