Concentration expressed as number of moles of solute per kilogram of solvent.
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Refers to species that have only six electrons in the highest energy level of the central element (many Lewis acids).
Spontaneous decomposition of an atom.
Refers to different atomic forms of all elements in contrast to ?isotopes?, which refer only to different atomic forms of a single element.
Number of moles of solute per litre of solution.
Elements with properties intermediate between metals and nonmetals: B, Al, Si, Ge, As, Sb, Te, Po, and At.
The sum of the molalities of all solute particles in a solution.
A binary compound in which H is bonded to one or more of the more electronegative nonmetals.
A sample of matter composed of two or more substances, each of which retains its identity and properties.
For acid-base titrations, organic compounds that exhibit different colors in solutions of different acidities, used to determine the point at which reaction between two solutes is complete.
The solid and liquid states.
An area that may be used for work with carcinogens, reproductive toxins, or substances that have a high degree of acute toxicity. A designated area may be the entire laboratory, an area of a laboratory, or a device such as a laboratory hood.
An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.
Bonds resulting from the head-on overlap of atomic orbitals, in which the region of electron sharing is along and (cylindrically) symmetrical to the imaginary line connecting the bonded atoms.
To estimate the value of a result outside the range of a series of known values. Technique used in standard additions calibration procedure.
Solvent (or mobile phase) which passes through a chromatographic column and removes the sample components from the stationary phase.
Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.
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)
Compounds that contain only carbon and hydrogen.
Any of three oily, colorless, water-insoluble, flammable, toxic, isomeric liquids, C8H10, of the benzene series, obtained mostly from coal tar: used chiefly in the manufacture of dyes.
Solid consisting of two co-crystallized salts.