Sol vs Gel

The present post discusses about the Difference between Sol and Gel. Sol, Gel and Emulsion are the different states of colloidal solutions.

Sol: The liquid state of a colloidal solution is called the sol.
Gel: The solid or semi-solid (Jelly like) stage of a colloidal solution is called the gel.

Difference between Sol and Gel

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

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