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Absorption of a K shell (n=1) electron by a proton as it is converted to a neutron.

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Secondary Standard

A solution that has been titrated against a primary standard. A standard solution is a secondary standard.

 

Equivalent Weight

An oxidizing or reducing agent, who's mass gains (oxidizing agents) or loses (reducing agents) 6.022 x 1023 electrons in a redox reaction.
The mass of an acid or base that furnishes or reacts with 6.022 x 1023 H3O+ or OH- ions.

Salicylaldehyde

An oily, slightly water-soluble liquid, C7H6O2, having an almondlike odor: used chiefly in perfumery and in the synthesis of coumarin.

Octahedral

A term used to describe molecules and polyatomic ions that have one atom in the center and six atoms at the corners of a octahedron.

xylan

The pentosan occurring in woody tissue that hydrolyzes to xylose: used as a source of furfural.

Nernst Equation

Corrects standard electrode potentials for nonstandard conditions.

Dispersing Medium

The solvent-like phase in a colloid.

Band

A series of very closely spaced, nearly continuous molecular orbitals that belong to the crystal as a whole.

Homogeneous Equilibria

Equilibria involving only one species in a single phase. For example, all gases, all liquids or all solids.

xanthene dye

Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.

 

Potential Energy

Energy that matter possesses by virtue of its position, condition or composition.

Differential Thermometer

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

Forbidden Zone

A relatively large energy separation between an insulator's highest filled electron energy band and the next higher energy vacant band. Beginning in the fourth energy level, a set of seven degenerate orbitals per energy level, higher in energy than s, p, and d orbitals of the same energy level.

Cathodic Protection

Protection of a metal (making ir a cathode) against corrosion by attaching it to a sacrifical anode of a more easily oxidized metal.

Standard Electrodes

Half-cells in which the oxidized and reduced forms of a species are present at unit activity, 1.0M solutions of dissolved ions, 1.0atm partial pressure of gases, and pure solids and liquids.

Alloying

Mixing of metal with other substances (usually other metals) to modify its properties.

Surface Tension

It is the force in dynes acting along the surface of the liquid 1cm in length and perpendicular to it.

Solubility Product Constant

Equilibrium constant that applies to the dissolution of a slightly soluble compound.

Radioactive Tracer

A small amount of radioisotope replacing a nonradioactive isotope of the element in a compound whose path (for example, in the body) or whose decomposition products are to be monitored by detection of radioctivity, also called a radioactive label.

Reaction Stoichiometry

Description of the quantitative relationships among substances as they participate in chemical reactions.