What are suspensions and colloids?
Answers
Answer: Suspensions are the homogenous mixture of particles with a diameter greater than 1000 nm such that the particles are visible to naked eyes. In this type of mixture, all the components are completely mixed and all the particles can be seen under a microscope. A suspension is a heterogeneous mixture containing solid particles that are sufficiently large for sedimentation.
Colloids are the intermediate between solution and suspension. It has particles with sizes between 2 to 1000 nanometers. A colloid is easily visible to the naked eye. Colloids can be distinguished from solutions using the Tyndall effect.
Tyndall effect is defined as the scattering of light (light beam) through a colloidal solution. The particles are termed as colloidal particles and the mixture formed is known as colloidal dispersion. Liquid, solid and gases all mix together to form a colloidal dispersion.
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Answer:
A colloid is a heterogeneous mixture in which the dispersed particles are intermediate in size between those of a solution and a suspension. ... Because the dispersed particles of a colloid are not as large as those of a suspension, they do not settle out upon standing.