By:- Suprovat Mondal East Point College Of Pharmacy Bangalore

8. ……….(i)

10. Example:-
1) sugars ,salts , acids & bases called erystalloids exits . . .
. crystalline state.
2) Gelatin & albumin diffuse at slower rate colloidal . . . . . . .
. substance.
Most crystallinematerials can be obtainer in colloidal stateunder
appropriate conditions.
3) viscosity:- The viscosity of a colloidal dispersion is
affected by a variety of factors.
i)Shape of the dispersed particles :-
Spherical particles impart relatively low viscosity to
dispersion while particles of linear shape yield more
viscous system.

11. ii) Affinity of particles to the medium:-
If linear particles are placed in a medium having low affinity
for particles mestend to assume spherical shape & the
viscosity falls.
Medium Low affinity Assome 0
Viscosity falls