Question

explain why particles of a collid solution do not settle down when left undisturbed while in case of suspension they do? (4 marks)​

Answer 1

Answer:

he colloidal particles are smaller and not heavy. ... Apart from this, colloidal particles are charged and repel each other. This fact also do not the particles of colloidal solution to settle down. Whereas particles of suspension are larger, heavy and have less movement, thus settle down due to gravity.

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Answer 2

Answer:

Colloidal particles are smaller in size. They remain in state of zig-zag motion (Brownian motion) always,

so the force of gravity is encountered and they do not settle down. But the particles in suspension are larger in size, so they settle down under the influence of gravity.