Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 2. Is Matter Around Us Pure
Suspensions
(B) Suspensions : A suspension is a heterogeneous mixture in which the small particles of a solid are spread throughout a liquid without dissolving in it. Example. Chalk-water mixture, Muddy water, Milk of magnesia, Sand particles suspended in water, and Flour in water. Properties of suspensions A suspension is a heterogeneous mixture. The particles of a suspension do not pass through a filter paper. Hence, it is possible to separate them by ordinary filtration. The particles of suspension can be seen with naked eyes or with the help of a simple microscope. The particles of suspension settle down when a suspension is left undisturbed. Thus, a suspension is unstable. The size of particles in a suspension is greater than 100 nm in diameter. A suspension is not transparent to light.