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A reaction that, once initiated, sustains itself and expands. This is a reaction in which reactive species, such as radicals, are produced in more than one step. These reactive species, radicals, propagate the chain reaction.

 

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Cis-Trans Isomerism

A type of geometrical isomerism related to the angles between like ligands.

Actual Yield

Amount of a specified pure product actually obtained from a given reaction. Compare with Theoretical Yield.

Ore

A natural deposit containing a mineral of an element to be extracted.

Composition Stoichiometry

Descibes the quantitative (mass) relationships among elements in compounds.

Molecular Formula

Formula that indicates the actual number of atoms present in a molecule of a molecular substance.

Law of Combining Volumes (Gay-Lussac's Law)

At constant temperature and pressure, the volumes of reacting gases (and any gaseous products) can be expressed as ratios of small whole numbers.

 

Differential Thermometer

A thermometer used for accurate measurement of very small changes in temperature.

Oil

Liquid triester of glycerol and unsaturated fatty acids.

Tyndall Effect

The scattering of light by colloidal particles.

Nodal Plane

A region in which the probability of finding an electron is zero.