A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.
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Radioactive Dating
Method of dating ancient objects by determining the ratio of amounts of mother and daughter nuclides present in an object and relating the ratio to the object?s age via half-life calculations.
Cation
A positive ion, an atom or group of atoms that has lost one or more electrons.
Lewis Acid
Any species that can accept a share in an electron pair.
Metathesis Reactions
Reactions in which two compounds react to form two new compounds, with no changes in oxidation number. Reactions in which the ions of two compounds exchange partners.
Atomic Orbital
Region or volume in space in which the probability of finding electrons is highest.
Foam
Colloidal suspension of a gas in a liquid.
Effective Molality
The sum of the molalities of all solute particles in a solution.
Hund's Rule
All orbitals of a given sublevel must be occupied by single electrons before pairing begins.
Overlap
The interaction of orbitals on different atoms in the same region of space.
Saturated Hydrocarbons
Hydrocarbons that contain only single bonds. They are also called alkanes or paraffin hydrocarbons.
