Colloidal particles may be either 'dispersed' or aggregated'.

$($a$)$ What causes the difference between these two cases? Answer in terms of interparticle

interactions.

$($b$)$ Name and describe briefly at least two methods to create each tupe of colloidal

dispersion.

$($c$)$ Describe briefly the differences in the behavior of the two types of dispersions

$($including but not limited to rheological behavior, settling rate, sediment bed

properties.$)$