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Half-cells in which the oxidized and reduced forms of a species are present at unit activity, 1.0M solutions of dissolved ions, 1.0atm partial pressure of gases, and pure solids and liquids.

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Band of Stability

Band containing nonradioactive nuclides in a plot of number of neutrons versus atomic number.

Dumas Method

A method used to determine the molecular weights of volatile liquids.

Double Bond

Covalent bond resulting from the sharing of four electrons (two pairs) between two atoms.

Nuclear Reactor

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

Acetic Acid

CA3COOH, clear, colorless liquid, pungent odor. Boiling point 140C, flash point 54C (closed cup), autoignition temperature 38OC.

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.

Hydrolysis

The reaction of a substance with water or its ions.

Polar Bond

Covalent bond in which there is an unsymmetrical distribution of electron density.

Catenation

Bonding of atoms of the same element into chains or rings.
The bonding together of atoms of the same element to form chains.
The ability of an element to bond to itself.

Band

A series of very closely spaced, nearly continuous molecular orbitals that belong to the crystal as a whole.