Explain why particles of a coloidial solution do not settle down when left undisputed while in case of suspension they do
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particle of colloidal solution do not settle down when left is undisturbed,that is, a colloidal is quite stable and it is very small in size so it does not settle suspension has greater in size so it is settle down
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In a colloidal solution the colloidal particles are small and they are being continuously hit upon by the molecules of depression medium.
It is very unlikely that the dispersed face particles will be hit upon by an equal force from all the sides.
Therefore there is a resultant force acting upon the colloidal particles in a particular direction.
And colloidal particles execute zigzag motion called Brownian movement.
Because of this the colloidal particles do not settle down under the influence of gravity.
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