Any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups.
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The number of moles of a component of a mixture divided by the total number of moles in the mixture.
A substance at temperature above its critical temperature.
Amount of solute per unit volume or mass of solvent or of solution.
Half the numbers of electrons in bonding orbitals minus half the number of electrons in antibonding orbitals. Bond order gives an indication to the stability of a bond. Also defined as the difference between the number of bonding electrons and antibonding electrons divided by two.
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.
Electron emitted from the nucleus when a neuton decays to a proton and an electron.
Complex species that contain ammonia molecules bonded to metal ions.
Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.
Heat of Crystallization
The amount of heat that must be removed from one gram of a liquid at its freezing point to freeze it with no change in temperature.
Fine divided solid particles suspended in polluted air.
Outermost electrons of atoms, usually those involved in bonding.
The smallest particle of an element.
A packet of light or electromagnetic radiation, also called quantum of light.
A reaction in which the numbers of moles of reactants shown in the balanced equation, all in their standard states, are completely converted to the numbers of moles of products shown in the balanced equation, also sall at their standard state.
All orbitals of a given sublevel must be occupied by single electrons before pairing begins.
A white, needlelike, crystalline, water-soluble solid or syrup, C6H10O8, usually made by the oxidation of cane sugar, glucose, or starch by nitric acid. Also called "Glucaric acid."
Electrochemical cells in which spontaneous chemical reactions produce electricity, also called galvanic cells.
Ordinary batteries (voltaic cells) for flashlights. radios, and so on, many are Leclanche cells.
A cluster of atoms in a ferromagnetic substance, all of which align in the same direction in the presence of an external magnetic field.
Involves a change in the composition of a nucleus and can evolve or absorb an extraordinarily large amount of energy.