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Negative logarithm of the concentration (mol/L) of the H3O+[H+] ion, scale is commonly used over a range 0 to 14.

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Bronsted-Lowry Base

A proton acceptor

Meniscus

The shape assumed by the surface of a liquid in a cylindrical container.

Octahedral

A term used to describe molecules and polyatomic ions that have one atom in the center and six atoms at the corners of a octahedron.

Coordination Compound or Complex

A compound containing coordinate covalent bonds.

Acid Anhydride

Compound produced by dehydration of a carbonic acid. General formula is R--C--O--C--R. Chemical compound that reacts with water to form an acid and are usually oxides of nonmetallic elements.

Density

Density is the ratio b/w Mass and Volume: D=M/V

Periodic Law

The properties of the elements are periodic functions of their atomic numbers.

Hydride

A binary compound of hydrogen.

 

Sigma Bonds

Bonds resulting from the head-on overlap of atomic orbitals, in which the region of electron sharing is along and (cylindrically) symmetrical to the imaginary line connecting the bonded atoms.

Radical

An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)