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A change in which one or more new substances are formed.

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Calorimeter

A device used to measure the heat transfer between system and surroundings.

Central Atom

An atom in a molecule or polyatomic ion that is bonded to more than one other atom.

Contact Process

Industrial process by which sulfur trioxide and sulfuric acid are produced from sulfur dioxide.

Molecule

The smallest particle of an element or compound capable of a stable, independent existence.

Effective Molality

The sum of the molalities of all solute particles in a solution.

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.

Ore

A natural deposit containing a mineral of an element to be extracted.

Linkage Isomers

Isomers in which a particular ligand bonds to a metal ion through different donor atoms.

 

Standard Electrode Potential

By convention, potential, Eo, of a half-reaction as a reduction relative to the standard hydrogen electrode when all species are present at unit activity.

 

Molecular Orbital Theory

A theory of chemical bonding based upon the postulated existence of molecular orbitals.