2006-10-10 12:36:31 · 4 answers · asked by hello 1 in Science & Mathematics ➔ Chemistry
Particle size. From the reference, "Colloidal particles are larger than molecules but too small to be observed directly with a microscope; however, their shape and size can be determined by electron microscopy. In a true solution the particles of dissolved substance are of molecular size and are thus smaller than colloidal particles; in a coarse mixture (e.g., a suspension) the particles are much larger than colloidal particles. Although there are no precise boundaries of size between the particles in mixtures, colloids, or solutions, colloidal particles are usually on the order of 10^-7 to 10^-5 cm in size."
2006-10-10 14:35:29 · answer #1 · answered by kirchwey 7 · 1⤊ 1⤋
Colloids float in the solvent they are in and do not settle out or float to the bottom of the conatiner when left undisturbed, while suspensions are formed when particles do not dissolve, but settle out.
Eg. of Colloid is starch in water and also Emulsions
Eg. of suspension is sand and water
The particles of colloids can pass through filter paper but the particles of suspensions are held back by filter paper.
Therefore it can be concluded that suspensions have larger particles than the colloids.
2006-10-11 14:15:57 · answer #2 · answered by J D 3 · 7⤊ 1⤋
Colloidal mixtures do not separate upon standing, but suspensions do.
Example of a colloid:
Milk because of the proteins and fat molecules that do not dissolve. Colloids do not separate over time.
Example of a suspension:
Blood is a suspension. Blood cells that are larger than 1 micrometer will settle to the bottom of a test tube upon standing. Blood cells are routinely separated from plasma through centrifugation, (a spinning process that accelerates settling)
2014-02-19 12:35:13 · answer #3 · answered by Anonymous · 0⤊ 0⤋
suspension particles are bigger then colloids
2014-02-11 07:35:15 · answer #4 · answered by Anonymous · 0⤊ 0⤋