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A proton donor.

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Amorphous Solid

A noncrystalline solid with no well-defined ordered structure.

Artificial Transmutation

An artificially induced nuclear reaction caused by the bombardment of a nucleus with subatomic particiles or small nucei.

Nuclide Symbol

Symbol for an atom A/Z E, in which E is the symbol of an element, Z is its atomic number, and A is its mass number.

Reactants

Substances consumed in a chemical reaction.

Natural Radioactivity

Spontaneous decomposition of an atom.

Standard Entropy

The absolute entropy of a substance in its standard state at 298 K.

Acyl Group

Compound derived from a carbonic acid by replacing the --OH group with a halogen (X), usually --Cl, general formula is O R--C--X.

Second Law of Thermodynamics

The universe tends toward a state of greater diorder in spontaneous processes.

Fatty Acids

An aliphatic acid, many can obtained from animal fats.

Miscibility

The ability of one liquid to mix with (dissolve in) another liquid.

Chemical Bonds

The attractive forces that hold atoms together in elements or compounds.

Lanthanides

Elements 58 to 71 (after lanthanum).

Chemical Hygiene Plan (CHP)

A written program developed and implemented by an employer designating proceedures, equipment, personal protective equipment, and work practices that are capable of protecting employees from the health hazards presented by hazardous chemicals usid in that particular workplace.

Rate-determining Step

The slowest step in a mechanism, the step that determines the overall rate of reaction.

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.

Alpha (a) Particle

Helium ion with 2+ charge, an assembly of two protons and two neutrons.

Molecular Equation

Equation for a chemical reaction in which all formulas are written as if all substances existed as molecules, only complete formulas are used.

Plasma

A physical state of matter which exists at extremely high temperatures in which all molecules are dissociated and most atoms are ionized.

Percentage Ionization

The percentage of the weak electrolyte that ionizes in a solution of given concentration.

Double Salt

Solid consisting of two co-crystallized salts.