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Voltaic cells that cannot be recharged, no further chemical reaction is possible once the reactants are consumed.

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Catenation

Bonding of atoms of the same element into chains or rings.
The bonding together of atoms of the same element to form chains.
The ability of an element to bond to itself.

Secondary Voltaic Cells

Voltaic cells that can be recharged, original reactanats can be regenerated be reversing the direction of the current flow.

Sigma Orbital

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

Chemistry is a familiar school subject

Everyone liked to observe the reaction of reagents. But few know interesting facts about chemistry, which we will discuss in this article.

Alums

Hydrated sulfates of the general formula M+M3+(SO4)2.12H2).

Primary Voltaic Cells

Voltaic cells that cannot be recharged, no further chemical reaction is possible once the reactants are consumed.

Geiger counter

A gas filled tube which discharges electriaclly when ionizing radiation passes through it.

Lewis Base

Any species that can make available a share in an electron pair.

Miscibility

The ability of one liquid to mix with (dissolve in) another liquid.

Photochemical Smog

A brownish smog occurring in urban areas receiving large amounts of sunlight, caused by photochemical (light-induced) reactions among nitrogen oxides, hydrocarbons and other components of polluted air that produce photochemical oxidants.