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Potential difference between two electrodes, a measure of the chemical potential for a redox reaction to occur.

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Associated Ions

Short-lived species formed by the collision of dissolved ions of opposite charges.

Periodicity

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

Anode

In a cathode ray tube, the positive electrode. Electrode at which oxidation occurs.

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.

Electron Configuration

Specific distribution of electrons in atomic orbitals of atoms or ions.

Compound

A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements.

Condensed States

The solid and liquid states.

Formula Weight

The mass of one formula unit of a substance in atomic mass units.

 

Covalent Compounds

Compounds containing predominantly covalent bonds.

Hydrogen Bond

A fairly strong dipole-dipole interaction (but still considerably weaker than the covalent or ionic bonds) between molecules containing hydrogen directly bonded to a small, highly electronegative atom, such as N, O, or F.