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Suppression of ionization of a weak electrolyte by the presence in the same solution of a strong electrolyte containing one of the same ions as the weak electrolyte.

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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.

Deposition

The direct solidification of a vapor by cooling, the reverse of sublimation.

Differential Thermal Analysis (DTA)

A technique for observing the temperature, direction, and magnitude of thermally induced transitions in a material by heating/cooling a sample and comparing its temperature with that of an inert reference material under similar conditions.

Amphoterism

The ability to react with both acids and bases.Ability of substance to act as either an acid or a base.

Polyprotic Acid

An Acid that can form two or more hydronium ions per molecule, often a least one step of ionization is weak.

Covalent Bond

Chemical bond formed by the sharing of one or more electron pairs between two atoms.

Periodic Table

An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.

Phenol

Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.

 

Dynamic Equilibrium

An equilibrium in which processes occur continuously, with no net change. When two (or more) processes occur at the same rate so that no net change occurs.

Foam

Colloidal suspension of a gas in a liquid.