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A number that indicates how smoothly a gasoline burns.

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Flotation

Method by which hydrophobic (water-repelling) particles of an ore are separated from hydrophilic (water-attracting) particles of a metallurgical pretreatment process.

Corrosion

Oxidation of metals in the presence of air and moisture.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

Evaporization

Vaporization of a liquid below its boiling point.

Functional Group

A group of atoms that represents a potential reaction site in an organic compound.

Group

A vertical column in the periodic table, also called a family.

Alkynes

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

Vapor

A gas formed by boiling or evaporating a liquid.

Chain Termination Step

The combination of two radicals, which removes the reactive species that propagate the change reaction.

Atomic Number


Integral number of protons in the nucleus, defines the identity of element.