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Ions resulting from the formation of coordinate covalent bonds between simple ions and other ions or molecules.

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Binary Acid

A binary compound in which H is bonded to one or more of the more electronegative nonmetals.

Chain Termination Step

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

Bond Energy

The amount of energy necessary to break one mole of bonds of a given kind (in gas phase).The amount of energy necessary to break one mole of bonds in a substance, dissociating the sustance in the gaseous state into atoms of its elements in the gaseous state.

Explosive limits

The range of concentrations over which a flammable vapour mixed with proper ratios of air will ignite or explode if a source of ignitions is provided.

Valence Bond Theory

Assumes that covalent bonds are formed when atomic orbitals on different atoms overlap and the electrons are shared.

Nuclear Reactor

A system in which controlled nuclear fisson reactions generate heat energy on a large scale, which is subsequently converted into electrical energy.

First Law of Thermodynamics

The total amount of energy in the universe is constant (also known as the Law of Conservation of Energy) energy is neither created nor destroyed in ordinary chemical reactions and physical changes.

Polymerization

The combination of many small molecules to form large molecules.

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.