18. Describe any two properties of colloids. Give one example each for the given
category of colloids
(a) Emulsion (b) Liquid Foam (c) Sol (d) Gel
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Explanation:
A colloid is one of the three primary types of mixtures, with the other two being a solution and suspension.
In colloids, one substance is evenly dispersed in another. The substance being dispersed is referred to as being in the dispersed phase, while the substance in which it is dispersed is in the continuous phase.
Sol is a colloidal suspension with solid particles in a liquid.
Emulsion is between two liquids.
Foam is formed when many gas particles are trapped in a liquid or solid.
Aerosol contains small particles of liquid or solid dispersed in a gas.
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