Created by – Arjun Goyal

Harsh Bindal

Saurabh Bansal

For – Nidhi Mam

Chemistry Presentation

ColloidsA colloid is a type of mixture intermediate

between a homogeneous mixture (also called a solution) and a heterogeneous mixture with

properties also intermediate between the two.

A colloid is a suspension of particles in a medium

The particles may be solid, liquid or gas and are called the disperse phase

The medium may also be solid liquid or gas and is called the continuous phase

What is a colloid?

The most chemically active fraction of soils. They are very small, less than 2µm in

diameter Shape Colloids can be either - mineral (clays) or organic (humus) - crystalline (definite structure) or

amorphous

Soil Colloids

Technical name of colloid

Dispersed phase

Dispersion medium

Examples

1. Sol Solid Liquid Ink, Soap solution

2. Solid sol Solid Solid Colored gemstones

3. Aerosol i. Solidii. Liquid

GasGas

SmokeFog, Mist

4. Emulsion Liquid Liquid Milk, Butter5. Foam Gas Liquid Shaving

cream6. Solid foam Gas Solid Sponge,

Bread7. Gel Solid Liquid Jellies, Hair

gel

Types of Colloid