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A reaction in which two atoms or groups of atoms are added to a molecule, one on each side of a double or triple bond. Types of addition reaction include electrophilic, nucleophilic (polar) and free radical addition (non-polar).

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Thermal Cracking

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

 

Alkylbenzene

A compound containing an alkyl group bonded to a benzene ring.

Hydrate Isomers

Isomers of crystalline complexes that differ in whether water is present inside or outside the coordination sphere.

Radiation

High energy particles or rays emitted during the nuclear decay processes.

Adsorption

Adhesion of a species onto the surfaces of particles.

Heat of Vaporization

The amount of heat required to vaporize one gram of a liquid at its boiling point with no change in temperature. Usually expressed in J/g. The molar heat of vaporization is the amount of heat required to vaporize one mole of liquid at its boiling point with no change in temperature and usually expressed ion kJ/mol.

Boron Hydrides

Binary compounds of boron and hydrogen.

Silicones

Polymeric organosilicon compounds, contain individual or cross-linked Si-O chains or rings in which some oxygens of SiO4 tetrahedra are replaced by other groups.

Charle's Law

At constant pressure the volume occupied by a definite mass of gas is directly proportional to its absolute temperature.

Chemistry of the sky

Chemistry can teach us about the composition of celestial bodies and determine their age.