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A solution that contains a higher than saturation concentration of solute, slight disturbance or seeding causes crystallization of excess solute.

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Functional Group

A group of atoms that represents a potential reaction site in an organic compound.

Polymer

A large molecule consisting of chains or rings of linked monomer units, usually characterized by high melting and boiling points.

Temperature

A measure of the intensity of heat, i.e. the hotness or coldness of a sample. or object.

All Chemicals - Chemical Glossary

The Chemical Glossary currently has 651 chemical entries. You may search the Chemical Glossary by entering the keyword in the search box or by browsing the entire chemical glossary by letter in alphabetical order.

Active Metal

Metal with low ionization energy that loses electrons readily to form cations.

Joule

A unit of energy in the SI system. One joule is 1 kg. m2/s2 which is also 0.2390 calorie.

Differential Thermal Analysis (DTA)

A technique for observing the temperature, direction, and magnitude of thermally induced transitions in a material by heating/cooling a sample and comparing its temperature with that of an inert reference material under similar conditions.

Distillation

The separation of a liquid mixture into its components on the basis of differences in boiling points. The process in which components of a mixture are separated by boiling away the more volitile liquid.

Stereoisomers

Isomers that differ only in the way that atoms are oriented in space, consist of geometrical and optical isomers.

 

Conjugated Double Bonds

Double bonds that are separated from each other by one single bond -C=C-C=C-.