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A Nuclear particle with the mass of an electron but opposite charge.

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Metallic Conduction

Conduction of electrical current through a metal or along a metallic surface.

Denatured

A commercial term used to describe ethanol that has been rendered unfit for human consumption because of the addition of harmful ingredients to make it sales tax-expempt.

 

Boyle's Law

At constant temperature the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure.

Photochemical Oxidants

Photochemically produced oxidizing agents capable of causing damage to plants and animals.

Optical Isomers

Stereoisomers that differ only by being nonsuperimposable mirror images of each other, like right and left hands, also called enantiomers.

Chemical Hygiene Officer (CHO)

A person or employee who is qualified by training or experience to provide technical guidance in the development and implementations of the provisions of a Chemical Hygiene Plan (CHP)

Salicylate

A salt or ester of salicylic acid.

Avogadro's Law

At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.

Equilibrium or Chemical Equilibrium

A state of dynamic balance in which the rates of forward and reverse reactions are equal, the state of a system when neither forward or reverse reaction is thermodynamically favored.

Heat Capacity

The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.

Gel

Colloidal suspension of a solid dispersed in a liquid, a semirigid solid.

Molecular Formula

Formula that indicates the actual number of atoms present in a molecule of a molecular substance.

Polyprotic Acid

An Acid that can form two or more hydronium ions per molecule, often a least one step of ionization is weak.

Heterogeneous Catalyst

A catalyst that exists in a different phase (solid, liquid or gas) from the reactants, a contact catalyst.

Net Ionic Equation

Equation that results from canceling spectator ions and eliminating brackets from a total ionic equation.

Atom

The smallest particle of an element.

Barometer

A device for measuring pressure.

Mass Number

The sum of the numbers of protons and neutrons in an atom, an integer.

Crystal Field Theory

Theory of bonding in transition metal complexes in which ligands and metal ions are treated as point charges, a purely ionic model, ligand point charges represent the crystal (electrical) field perturbing the metal?s d orbitals containing nonbonding electrons.

Chemical Kinetics

The study of rates and mechanisms of chemical reactions and of the factors on which they depend.