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A sustance that coats the particles of the dispersed phase and prevents coagulation of colloidal particles, an emulsifier.

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Cathode

Electrode at which reduction occurs in a cathode ray tube, the negative electrode.

Anion

A negative ion, an atom or goup of atoms that has gained one or more electrons.

 

Substance

Any kind of matter all specimens of which have the same chemical composition and physical properties.

 

Metallurgy

Refers to the overall processes by which metals are extracted from ores.

Sigma Orbital

Molecular orbital resulting from head-on overlap of two atomic orbitals.

Chain Reaction

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.

 

Molecular Orbital

An orbit resulting from overlap and mixing of atomic orbitals on different atoms. An MO belongs to the molecule as a whole.

Nuclear Reactor

A system in which controlled nuclear fisson reactions generate heat energy on a large scale, which is subsequently converted into electrical energy.

Ideal Solution

A solution that obeys Raoult's Law exactly.

Anode

In a cathode ray tube, the positive electrode. Electrode at which oxidation occurs.