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Solutions and colloids

Chemists must provide solutions!!!

 

There are various kinds of solutions. The typical solution is that of a solid in a liquid solvent, like salt or sugar in water for instance.

There are mixtures called colloids, which are solutions where the solutes are relatively larger molecules. For instance, milk is a colloid where the large fat molecules are dispersed in water. The white colour comes from the fat molecules interacting with light. In typical solutions the solute is too small to interact with light so that they will look transparent.

There are the following types of colloids:

dispersed phase (solute)	dispersion medium (solvent)	name	examples
solid	gas	aerosol	smoke
liquid	gas	aerosol	deodorant,fog
solid	liquid	sol	blood
liquid	liquid	emulsion	milk, hand cream
gas	liquid	foam	shaving foam
solid	solid	solid dispersion	metal alloy , glass
liquid	solid	gel	gelatine
gas	solid	solid foam	polystyrene