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The percentage of the weak electrolyte that ionizes in a solution of given concentration.

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Gem-dimethyl group

Two methyl groups of the same carbon atom.

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.

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.

Percent by Mass

100% times the actual yield divided by theoretical yield.

Daughter Nuclide

Nuclide that is produced in a nuclear decay.

 

Polar Bond

Covalent bond in which there is an unsymmetrical distribution of electron density.

Moderator

A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision.

Natural Radioactivity

Spontaneous decomposition of an atom.

Amphiprotism

Ability of a substance to exhibit amphiprotism by accepting donated protons.

Capillary

A tube having a very small inside diameter.