Question

What is the difference between multimolecular and macromolecular colloids? Give one example of each.

Answer 1

Colloids are not the true solution here particles of the compound are present but do not settle down at the bottom that is particles are suspended in the dispersion medium. Colloids are the system having two phases one is the continuous phase and another is the dispersed phase. Here, the continuous phase acts as a dispersion medium, and the dispersed phase consists of the particles having the size ranges from 1nm to 1000 nm.

Complete step-by-step answer:
The difference between the multimolecular and macromolecular colloids is as follows:

Multi-molecular colloids	Macromolecular colloids
1)In this type of colloids smaller molecules aggregate to form the large molecules.	1)In this type of colloid molecules themselves are large and hence, form the colloid.
2)The colloid is formed from the particles having a diameter of less than 1nm.	2)These are formed from the particles whose diameter is in the colloidal range.
3)Here, the particles involved in the formation of the colloids are of lower molecular weight.	3)Here, the particles involved in the formation of the colloids are of higher molecular weight.
4)These colloids are lyophobic.	4)These colloids are lyophilic.
5)The force of attraction between the aggregates is the weak van der Waal forces.	5) The force of attraction between the particles and liquids strong attraction forces.
6)Example: Gold sol, Sulphur sol	6) Starch, cellulose, proteins, enzymes, etc.

Note:
As the colloids consist of the particles suspended into the dispersion medium the particle size decides the types of the colloids. There are three main types based on the particle size are as follows:
1)Multi-molecular colloids: In this type particles having a size less than 1nm are present.
2)Macromolecular colloids: Here, the particles of large size are present.
3) Associated colloids: There is an association of the large numbers of ions in concentrated solution.