Question

Define the following term:
Multimolecular colloids

Answer 1

Hint: From the word ‘multi’ it is clear that some species are present in more than one quantity and molecular means such species which is obtained by the combination of many atoms.

Complete answer:
As we know that colloids is a mixture in which particles are present unevenly in the solution in the dispersed form.
As the name Multimolecular colloids suggested that many small molecules which are present in a solution in the dispersed form join together during dissolution to form a big molecule which is known by the name multimolecular colloids, because the size of the formed particle also comes under the range of colloidal particles.
-Range of the multimolecular colloids that are formed during dissolution are in between ${\text{1 - 200nm}}$.
-Diameter of the small particles which joined together to form multimolecular colloids is always less than ${\text{1nm}}$.
-Force which is involved from these multimolecular colloids is weak van der waal’s force.
-Example of multimolecular colloids is gold sol or sulphur sol.

Additional information:
These multimolecular colloids are lyophobic in nature, meaning they show very less affinity or attraction towards any type of liquid. And the molecular weight of formed multimolecular colloids is always more than the weight of that particle which is joined together to form it.

Note:
Here some of you may think that multimolecular colloids are the type of polymers, because they are formed by the combination of many molecules. But that concept will be wrong because it is a colloid not a polymer.