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The relative order of tendencies for elements and their simple ions to act as oxidizing or reducing agents, also called the activity series.

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Coordination Number

In describing crystals, the number of nearest neighbours of an atom or ion. The number of donor atoms coordinated to a metal.

Covalent Compounds

Compounds containing predominantly covalent bonds.

Daughter Nuclide

Nuclide that is produced in a nuclear decay.

 

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.

Activation Energy

Amount of energy that must be absorbed by reactants in their ground states to reach the transition state so that a reaction can occur. In other words, activation energy is the minimum energy required for a chemical reaction to occur.

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Heat of Condensation

The amount of heat that must be removed from one gram of a vapor at it's condensation point to condense the vapour with no change in temperature.

Heterocyclic Amine

Amine in which the nitrogen is part of a ring.

Electrodes

Surfaces upon which oxidation and reduction half-reactions, occur in electrochemical cells.

Cyclotron

A device for accelerating charged particles along a spiral path.