Numbers that describe the energies of electrons in atoms, derived from quantum mechanical treatment.
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Most of the microscopes used today are compound. A compound microscope features two or more lenses. A hollow cylinder called the tube connects the two lenses. The top lens, the one people look through, is called the eyepiece. The bottom lens is known as the objective lens. Below the two lenses is...
A salt or ester of xanthic acid. Many xanthates have a yellow color. Xanthates are used as flotation agents in mineral processing.
The temperature at which a liquid will yield enough flamable vapour to ignite. There are various recognized industrial testing methods, therefore the method used must be stated.
A device used to measure optical activity.
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.
A listing of metals (and hydrogen) in order of decreasing activity.
Boiling Point Elevation
The increase in the boiling point of a solvent caused by the dissolution of a nonvolatile solute.
Energy required to pair two electrons in the same orbital.
Weak repulsion by a magnetic field.
Equation relating the rate of a reaction to the concentrations of the reactants and the specific rate of the constant.
Refers to an optically active substance that rotates the plane of plane polarized light counterclockwise, also called levo.
A plant extract that has a distinctive odour or flavour.
Reaction of a substance with water.
Of electrons, refers to bonding electrons that are distributed among more than two atoms that are bonded together, occurs in species that exhibit resonance.
The formation of a set of molecular orbitals that extend over more than two atoms, important in species that valence bond theory describes in terms of resonance.
The separation of a liquid mixture into its components on the basis of differences in boiling points. The process in which components of a mixture are separated by boiling away the more volitile liquid.
Two or more forms of atoms of the same element with different masses, atoms containing the same number of protons but different numbers of neutrons.
Benzene and its derivatives.
Second Law of Thermodynamics
The universe tends toward a state of greater diorder in spontaneous processes.
Refers to chemical similarities in the Periodic Table of elements of Period 2 to elements of Period 3 one group to the right, especially evident toward the left of the periodic table.
Arrangement of ligands in order of increasing ligand field strength.
Group VIIA elements: F, Cl, Br, I