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

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Polarization

The buildup of a product of oxidation or a reduction of an electrode, preventing further reaction.

Suspension

A heterogeneous mixture in which solute-like particles settle out of solvent-like phase some time after their introduction.

Molecular Geometry

The arrangement of atoms (not lone pairs of electrons) around a central atom of a molecule or polyatomic ion.

Adsorption

Adhesion of a species onto the surfaces of particles.

Anode

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

Homogeneous Equilibria

Equilibria involving only one species in a single phase. For example, all gases, all liquids or all solids.

Dipole Moment

The product of the distance separating opposite charges of equal magnitude of the charge, a measure of the polarity of a bond or molecule, a measured dipole moment refers to the dipole moment of an entire molecule.

Isotopes

Two or more forms of atoms of the same element with different masses, atoms containing the same number of protons but different numbers of neutrons.

Chemical Periodicity

The variations in properties of elements with their position in the periodic table.

Liquid Aerosol

Colloidal suspension of liquid in gas.

Periodicity

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

Lewis Acid

Any species that can accept a share in an electron pair.

Ketone

Compound in which a carbonyl group is bound to two alkyl or two aryl groups, or to one alkyl and one aryl group.

Acid

A substance that produces H+(aq) ions in aqueous solution. Strong acids ionize completely or almost completely in dilute aqueous solution. Weak acids ionize only slightly. Chemicals or substances having the property of an acid are said to be acidic.

Disproportionation Reactions

Redox reactions in which the oxidizing agent and the reducing agent are the same species.

Avogadro's Number

The number (6.022x10^23) of atoms, molecules or particles found in exactly 1 mole of substance.

Heat of Fusion

The amount of heat required to melt one gram of solid at its melting point with no change in temperature. Usually expressed in J/g. The molar heat of fusion is the amount of heat required to melt one mole of a solid at its melting point with no change in temperature and is usually expressed in kJ/mol.

Anion

A negative ion, an atom or goup of atoms that has gained one or more electrons.

 

Alloying

Mixing of metal with other substances (usually other metals) to modify its properties.

Low Spin Complex

Crystal field designation for an inner orbital complex, contains electrons paired t2g orbitals before eg orbitals are occupied in octahedral complexes.