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An inhibitor, a catalyst that decreases the rate of reaction.

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Amorphous Solid

A noncrystalline solid with no well-defined ordered structure.

Manometer

A two-armed barometer.

Semipermable Membrane

A thin partition between two solutions through which certain molecules can pass but others cannot.

Acetic Acid

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

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

Formal Charge

A method of counting electrons in a covalently bonded molecule or ion, counts bonding electrons as though they were equally shared between the two atoms.

Atomic Radius

Radius of an atom.

Equivalent Weight

An oxidizing or reducing agent, who's mass gains (oxidizing agents) or loses (reducing agents) 6.022 x 1023 electrons in a redox reaction.
The mass of an acid or base that furnishes or reacts with 6.022 x 1023 H3O+ or OH- ions.

Dermal toxicity

Adverse health effects resulting from skin exposure ot a substance.

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.

xenon trioxide

A colorless, nonvolatile solid, XeO3, explosive when dry: in solution it is called xenic acid.

Hydrolysis Constant

An equilibrium constant for a hydrolysis reaction.

Nodal Plane

A region in which the probability of finding an electron is zero.

 

Ionization Isomers

Isomers that result from the interchange of ions inside and outside the coordination sphere.

Curie (Ci)

The basic unit used to describe the intensity of radioactivity in a sample of material. One curie equals 37 billion disintegrations per second or approximately the amount of radioactivty given off by 1 gram of radium.

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.

Electromotive Series

The relative order of tendencies for elements and their simple ions to act as oxidizing or reducing agents, also called the activity series.

Meniscus

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

Thermodynamics

The study of the energy transfers accompanying physical and chemical processes.

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.