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A ligand atom whose electrons are shared with a Lewis acid.

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Leclanche Cell

A common type of dry cell.

Reaction Quotient

The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

Lead Storage Battery

Secondary voltaic cell used in most automobiles.

Calorimeter

A device used to measure the heat transfer between system and surroundings.

Dextrorotatory

Refers to an optically active substance that rotates the plane of plane polarized light clockwise, also called dextro.

Gamma Ray

High energy electromagnetic radiation. A highly penetrating type of nuclear radiation similar to x-ray radiation, except that it comes from within the nucleus of an atom and has a higher energy. Energywise, very similar to cosmic ray except that cosmic rays originate from outer space.

Ionization Isomers

Isomers that result from the interchange of ions inside and outside the coordination sphere.

Chemistry of the sky

Chemistry can teach us about the composition of celestial bodies and determine their age.

Control Rods

Rods of materials such as cadmium or boron steel that act as neutron obsorbers (not merely moderaters) used in nuclear reactors to control neutron fluxes and therfore rates of fission.

Solution

Homogeneous mixture of two or more substances.