Question

Define the following terms.
(i) Brownian movement
(ii) Peptization
(iii) Multimolecular colloids

Answer 1

i. The random, continuous, zigzag motion of colloidal particles in dispersion medium is called Brownian movement.

ii .Peptization is the process of converting freshly prepared precipitate into colloidal sol.

iii.Colloid formed by aggregation of large no.of atoms or molecules which generally have diameter less than 1 nm.Ex sol of gold,sulphur etc.