explain why particles of a colloidal solution do not settle down when left undisturbed.while in the case of a suspension they do.
Answers
Answer:
Particles of colloids are smaller than that of suspensions, and not heavy. they remain in a zig-zag rapid motion called brownian motion, this provides stability to the colloidal system. Because it does not allow the particles to settle down.
now, in a suspension the particles are large and heavier. so naturally, if left undisturbed they will separate into layers. they are unstable.
IN DETAIL STUDY AND NOTES
Definition of a colloid- it is a heterogeneous mixture, which often appears homogeneous. the particle size in colloids ranges from 1 to 1000 nanometers.
Like solutions, COLLOIDS DO NOT SEPARATE OUT INTO LAYERS, because they are stable. (unlike suspensions)
The particles of colloids cannot be filtrated either.
example of a colloid is milk, as well as whipped cream, jelly and emulsion paint.
like there is solute and solvent, in colloids we have dispersed phase and dispersion medium.
eg. sugar will be dispersed phase (solute) and water will be the medium (solvent).
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