Saturday, August 04, 2007

identification of chemical system

Homogeneous systems are one-phase systems; all parts of the systems show the same characteristics all throughout.

A heterogeneous system is a one ore more phase system; the parts retain their original properties.

A substance is made of only one kind of molecule; a mixture is made of 2 or more kinds of molecules.

solutions, (ex. salt solution), not filterable, smallest particle size, no Tyndall effect

colloids, (ex. starch & water), slight filterability particle are bigger than that of solutions but smaller than suspensions, Tyndall effect was observed

suspensions, (ex. starch & water), very filterable, biggest particle size, Particles settle at the bottom, No Tyndall Effect


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