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Compounds containing predominantly covalent bonds.

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Bronsted-Lowry Acid

A proton donor.

Buffer Solution

Solution that resists change in pH, contains either a weak acid and a soluble ionic salt of the acid or a weak base and a soluble ionic salt of the base.

Endothermicity

The absorption of heat by a system as the process occurs.

Raoult's Law

The vapor pressure of a solvent in an ideal solution decreases as its mole fraction decreases.

Actinides

Elements 89 to 103 (between lawrencium and actinium) on the periodic table. Only the first four have been found in nature in appreciable amounts. The remainder have been produced synthetically.

Greenhouse Effect

Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.

Ionization Energy

The minimum amount of energy required to remove the most loosely held electron of an isolated gaseous atom or ion.

Photon

A packet of light or electromagnetic radiation, also called quantum of light.

 

Polymerization

The combination of many small molecules to form large molecules.

Coordination Isomers

Isomers involving exchanges of ligands between complex cation and complex anion of the same compound.