The particles in a colloid are larger than most simple molecules; however, colloidal particles are small enough that they do not settle out upon standing. The particles in a colloid are large enough to scatter light, a phenomenon called the When light is passed through a true solution, the dissolved particles are too small to deflect the light. However, the dispersed particles of a colloid, being larger, do deflect light. The Tyndall effect is the scattering of visible light by colloidal particles.
Do colloids separate over time?
Colloids generally do not separate on standing. They are not separated by filtration. Suspensions are homogeneous mixtures with particles that have diameters greater than 1000 nm, 0.000001 meter. The size of the particles is great enough so they are visible to the naked eye.
Do colloidal solutions settle?
Particles of a colloidal solution do not settle down when left undisturbed, while in the case of a suspension they do.
