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A cluster of atoms in a ferromagnetic substance, all of which align in the same direction in the presence of an external magnetic field.

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Alkenes (Olefins)

Unsaturated hydrocarbons that contain one or more carbon-carbon double bonds.

Derivative

A compound that can be imagined to arise from a partent compound by replacement of one atom with another atom or group of atoms. Used extensively in orgainic chemistry to assist in identifying compounds.

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.

 

Group

A vertical column in the periodic table, also called a family.

Ligand

A Lewis base in a coordination compound.

Isoelectric

Having the same electronic configurations.

Dispersed Phase

The solute-like species in a colloid.

Capillary

A tube having a very small inside diameter.

Le Chatelier's Principle

States that a system at equilibrium, or striving to attain equilibrium, responds in such a way as to counteract any stress placed upon it.
If a stress (change of conditions) is applied to a system at equilibrium, the system shifts in the direction that reduces stress.

Boyle's Law

At constant temperature the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure.