Double bonds that are separated from each other by one single bond -C=C-C=C-.
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Nitrogen Cycle
The complex series of reactions by which nitrogen is slowly but continually recycled in the atmosphere, lithosphere and hydrosphere.
Capillary
A tube having a very small inside diameter.
Monoprotic Acid
Acid that can form only one hydronium ion per molecule, may be strong or weak. Acid that contains one ionizable hydrogen atom per formula unit.
Sigma Bonds
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.
Debye
The unit used to express dipole moments.
Structural Isomers
Compounds that contain the same number of the same kinds of atoms in different geometric arrangements.
Specific Heat
The amount of heat required to raise the temperature of one gram of substance one degree Celsius.
Alkali Metals
Metals of Group IA (Na, K, Rb).
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xylidine
Any of six isomeric compounds that have the formula C8H11N, are derivatives of xylene, and resemble aniline: used in dye manufacture.
