Chem. Vocab. 301-325
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| Nonelectrolyte | a substance whose water solution does not conduct an electric current appreciably.
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| Non-metal | one of a class of elements which are usually poor conductors of heat and electricity and are electronegative.
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| Nonpolar Covalent Bond | a bond in which there is essentially equal attraction for the shared electrons and a resulting balanced distribution of charge.
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| Normal Solution | a solutions containing one gram equivalent of solute per liter of sloution.
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| Normality | the concentration of a solution expressed in gram-equivalents of solute per liter of solution.
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| Nuclear Change | formation of a new substance through changes in the identity of the atoms involved.
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| Nuclear Disintegration | the omission of a proton or neutron from a nucleus as a result of bombarding the nucleus with alpha particles, protons, deuterms, neutrons, etc.
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| Nuclear Equation | an equation representing changes in the nuclei of atoms
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| Nuclear Mass Defect | the difference between the mass of a nucleus and the sum of the masses of its constituent particles.
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| Nuclear Reaction | a device in which the controlled fission of radioactive material produces new radioactive substances and energy.
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| Nucleus | the psoitively charged dense, central part of an atom.
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| Nuclide | a variety of atom as determined by the composition of its nucleus.
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| Nuclide, parent | the heaviest, most complex naturally occuring nuclide in a decay series of radioactive elements.
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| Occulsion | the adsorption of a gas on a solid.
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| Octet | an outer shell of an atom having s and p orbitals filled with 8 electrons.
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| Open-hearth | a large furnace in which steel is made in a shallow pool.
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| Orbital, space | a highly probable location about a nucleus in which an electron may be found.
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| Orbital, quantum number | the quantum number which indicates the slope of an orbital.
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| Ore | a mineral containing an element that can be extracted profitably.
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| Organic | pertaining to carbon compounds, particluarly hydrocarbons and their derviatives.
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| Oraganosol | a suspensoid in which an organic liquid is the dispersing medium.
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| Orthorhombic | a crystalline system in which there are three unequal axes at right angles.
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| Oxidation | any chemical reaction whihc involves the loss of one or more electrons by an atom or an ion.
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| Oxidation Number | a number assigned to each element to indicate the number of electrons assumed to be gained, lost, or shared in compound formation.
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| Oxidation Potential | the difference between an electrode and its solution in a half-reaction.
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