Define the following terms with an example in each case:
(i) Macromolecular sol
(i) Macromolecular sol:
1. They are molecules of large size
Example: polymers like rubber, nylon, starch protiens etc.
2. They have high molecular masses.
3. Due to long chain, the van der Waals' forces holding them are comparatively
(ii) Peptization: It is process of converting a fresh precipitate into colloidal
particles by shaking it with the dispersion medium in the presence of a
small amount of a suitable electrolyte.
(iii) Emulsions: The colloidal solution in which both dispersed phase and dispersion
medium are in liquid state.
Example: Milk, cream.