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

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Extrapolate

To estimate the value of a result outside the range of a series of known values. Technique used in standard additions calibration procedure.

Periodic Law

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

Rate-determining Step

The slowest step in a mechanism, the step that determines the overall rate of reaction.

Alkenes (Olefins)

Unsaturated hydrocarbons that contain one or more carbon-carbon double bonds.

Gas of rotten eggs

If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.

Dispersed Phase

The solute-like species in a colloid.

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.

Secondary Standard

A solution that has been titrated against a primary standard. A standard solution is a secondary standard.

 

Coordination Compound or Complex

A compound containing coordinate covalent bonds.

Photochemical Oxidants

Photochemically produced oxidizing agents capable of causing damage to plants and animals.