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Maximum amount of a specified product that could be obtained from specified amounts of reactants, assuming complete consumption of limiting reactant according to only one reaction and complete recovery of product.

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Clay

A class of silicate and aluminosilicate minerals with sheet-like structures that have enormous surface areas that can absorb large amounts of water.

Oxidizing Agent

The substance that oxidizes another substance and is reduced.

Dosimeter

A small, calibrated electroscope worn by laboratory personnel and designated to detect and measure incident ionizing radiation or chemical exposure.

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.

Reaction Stoichiometry

Description of the quantitative relationships among substances as they participate in chemical reactions.

Flux

A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.

Reactants

Substances consumed in a chemical reaction.

ytterbium

A rare metallic element found in gadolinite and forming compounds resembling those of yttrium. Symbol: Yb, at. wt.: 173.04, at. no.: 70, sp. gr.: 6.96. Cf."rare-earth element."

 

Ionization Energy

The minimum amount of energy required to remove the most loosely held electron of an isolated gaseous atom or ion.

Weak Electrolyte

A substance that conducts electricity poorly in a dilute aqueous solution.

Free Energy Change

The indicator of spontaneity of a process at constnt T and P. If delta-G is negative, the process is spontaneous.

Pairing

A favourable interaction of two electrons with opposite m , values in the same orbital.

Metallurgy

Refers to the overall processes by which metals are extracted from ores.

Photochemical Smog

A brownish smog occurring in urban areas receiving large amounts of sunlight, caused by photochemical (light-induced) reactions among nitrogen oxides, hydrocarbons and other components of polluted air that produce photochemical oxidants.

 

Electrical Conductivity

Ability to conduct electricity.

Binary Acid

A binary compound in which H is bonded to one or more of the more electronegative nonmetals.

Spectrum

Display of component wavelengths (colours) of electromagnetic radiation.

pH

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

Coordination Compound or Complex

A compound containing coordinate covalent bonds.

Ternary Compound

A compound consisting of three elements, may be ionic or covalent.