Question

(a) List any three characteristics of colloid. 

(b) Name the two components of a colloid. 

(c) Identify colloid from the following mixtures: 

Muddy water, sugar in water, ink, blood, soda water, foam

Answer 1

(a) 1. Colloids are a heterogeneous mixture consisting of two phases dispersed phase and dispersing phase. 

2. Its size is too small to be seen by the naked eye 

3. But they are large enough to be scattering a beam of light and makes the path visible. 

(b) A colloid is a mixture consisting of dispersed phase and dispersing phase

(c) Foam is a colloid consisting of dispersed phase gas and dispersing medium solid.