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A substance that produces OH (aq) ions in aqueous solution. Strong soluable bases are soluble in water and are completely dissociated. Weak bases ionize only slightly.

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Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Phosphorus Oxychloride

Colorless to slightly yellow fuming liquid.

Mol. Wt.: 153.39
M.P.: 20C
B.P.: 105.1C
Density: 1.685 @ 15.5C
Vapor Pressure: 40 mm @ 27.3C
Vapor Density: 5.3
Used as the phosphorus source for phosphorus diffusion.

Polymerization

The combination of many small molecules to form large molecules.

Amphoterism

The ability to react with both acids and bases.Ability of substance to act as either an acid or a base.

Electrode Potentials

Potentials, E, of half-reactions as reductions versus the standard hydrogen electrode.

Hydrophilic Colloids

Colloidal particles that repel water molecules.

Nucleons

Particles comprising the nucleus, protons and neutrons.

Molar Solubility

Number of moles of a solute that dissolve to produce a litre of saturated solution.

Physical Change

A change in which a substance changes from one physical state to another but no substances with different composition are formed. Example Gas to Liquid - Solid.

 

Chemical Hygiene Plan (CHP)

A written program developed and implemented by an employer designating proceedures, equipment, personal protective equipment, and work practices that are capable of protecting employees from the health hazards presented by hazardous chemicals usid in that particular workplace.