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The properties of the elements are periodic functions of their atomic numbers.

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Salinometer

An instrument for measuring the amount of salt in a solution. Also,"salimeter, salometer."

Coefficient of expansion

The ratio of the change in length or volumen of a body to the original lengthor volume for a unit change in temperature.

Polymorphous

Refers to substances that crystallize in more than one crystalline arrangement.

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.

 

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Basic Anhydride

The oxide of a metal that reacts with water to form a base.

Linear Accelerator

A device used for accelerating charged particles along a straight line path.

History of fireworks

There is an assumption that the history of fireworks started in China, about 2000 years ago. It is possible that the Chinese accidentally discovered explosions by burning bamboo canes.

Lewis Dot Formula (Electron Dot Formula)

Representation of the core of a molecule, ion or formula unit by showing atomic symbols and only outer shell electrons.

Crystal Field Stabilization Energy

A measure of the net energy of stabilization gained by a metal ion's nonbonding d electrons as a result of complex formation.