Colloids (also known as colloidal solutions or colloidal systems) are mixtures of insoluble particles.<\/p>\n\n\n\n
They show dispersion of one substance that are microscopic in nature, and show suspension in another substance. <\/p>\n\n\n\n
The size of these suspended particles in a colloid can vary from 1 to 1000 nanometres (10-9<\/sup> metres).<\/p>\n\n\n\n A colloid is a mixture of particles between 1 and 1000 nanometers in diameter, yet it is still capable of evenly spreading throughout the solution. <\/p>\n\n\n\n They are also refer to as colloidal dispersions because the substances remain in dispersion and do not settle down on the bottom of the container.<\/p>\n\n\n\n However, the condition remains that for a mixture to be termed as colloid<\/p>\n\n\n\n The suspended particles present in the mixture must not settle down,<\/p>\n\n\n\n The way that the particles of suspensions settle at the bottom of the container if left undisturbed. <\/p>\n\n\n\n Solutions in colloidal state display tyndall effect, wherein the beam of light incident on colloids exhibit scattering due to the interactions between the colloidal particles and light.<\/p>\n\n\n\n