Sol
1. The liquid state of a colloidal solution is called sol.
2. The sol does not have a definite structure.
3. The dispersion medium of the sol may be water.
4. The sol can be converted to gel by cooling The sol can be easily dehydrated.
5. The viscosity of the sol is very low.
6. Sol is categorized into lyophobic and lyophilic sols.
7. Example: Blood
Gel
1. The solid or semi solid state of a colloidal solution is called gel.
2. The gel possesses honey comb like structure.
3. The dispersion medium of gel will be hydrated colloid particles.
4. The gel can be converted sol by heating.
5. The gel cannot be dehydrated.
6. The viscosity of the gel is very high.
7. There is no such classification of gel.
8. Example: Fruit jelly, cooked gelatin jelly.
