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Placing a thin layer of zinc on a ferrous material to protect the underlying surface from corrosion.

 

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Oxide

A binary compound of oxygen.

Second Law of Thermodynamics

The universe tends toward a state of greater diorder in spontaneous processes.

Acidic Salt

A salt containing an ionizable hydrogen atom. Acidic salt does not necessarily produce acidic solutions.

Coordination Number

In describing crystals, the number of nearest neighbours of an atom or ion. The number of donor atoms coordinated to a metal.

Fuel Cells

Voltaic cells in which the reactants (usually gases) are supplied continuously.
A voltaic cell that converts the chemical energy of a fuel and an oxidizing agent directly into electriacl energy on a continuous basis.

Tyndall Effect

The scattering of light by colloidal particles.

Three ways to make patina at home

The first way is ammonia patination. To do this, take a plastic container. Put a couple of paper or ordinary towels at the bottom. Moisten them with ammonia. Then sprinkle with large table salt.

Ore

A natural deposit containing a mineral of an element to be extracted.

Alkylbenzene

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

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.