Properties of a Suspension:
The important characteristic properties of a suspension are as follows:
Properties of Colloids:
The important characteristic properties of colloids or colloidal solutions are as follows:
The Classification of Colloids:
Technical name Of colloid | Dispersed Phase | Dispersion medium | Examples |
1. Sol | Solid | Liquid | Ink, Soap solution, Starch solution, Most paints |
2. Solid sol | Solid | Solid | Coloured gemstones (like Ruby) |
3. Aerosol | (i) Solid (ii) Liquid |
Gas Gas |
Smoke, Automobile exhausts Hairspray, Fog, mist, Clouds |
4. Emulsion | Liquid | Liquid | Milk, Butter, Face cream |
5. Foam | Gas | Liquid | Fire-extinguisher foam, Soap bubbles, Shaving cream, Beer foam |
6. Solid foam | Gas | Solid | Insulating foam, Foam rubber, sponge, Bread |
7. Gel | Solid Continuous network Solid in liquid |
Liquid Of |
Jellies, Gelatin, Hair gel |
Difference between Colloid and Suspension:
Suspension | Colloid |
It is a form of homogeneous solution | It is a form of heterogeneous solution |
Particle size greater than 1000 nm | Particle size range from1-1000 nm |
Particles settle down well | Particles do not separate |
Can be separated by filtration | Cannot be separated by filtration |
May scatter light | Shows Tyndall effect (scatters light) |
Opaque | Translucent |
Easily visible through naked eye | Not visible through naked eye |
Start your learning Journey !