Why don't suspensions show Tyndall effect?

Asked by HARSHITA JHA | 11th Jun, 2015, 10:27: PM

Expert Answer:

A suspension is a heterogeneous mixture. whereas, a colloid is a homogeneous looking heterogeneous mixture.
Colloids are big enough to scatter a beam of light passing through it and make its path visible. Hence, show Tyndall effect.
We apply the word 'suspension' when particles are big enough to eventually settle. If the particles are too small to ever settle, they are said to form a colloid.

A colloid is a homogeneous looking heterogeneous mixture.

Answered by Hanisha Vyas | 12th Jun, 2015, 09:52: AM