even more sexy
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Atom | the smallest component of an element having the chemical properties of the element
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| Plum-Pudding Model | model of the atom by J. J. Thomson, who discovered the electron in 1897, was proposed in 1904 before the discovery of the atomic nucleus
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| Gold-Foil Experiment | This classic diffraction experiment was conducted in 1911 by Ernest Rutherford.
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| Orbitals | a wave function describing the state of a single electron in an atom
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| Nucleus | a fundamental arrangement of atoms, as the benzene ring, that may occur in many compounds by substitution of atoms without a change in structure.
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| Proton | a positivly charged elementary particle that is a fundamental constituent on all atomic nuclei.
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| Electron | an elementary particle that is a fundamental constituent of matter, having a negative charge
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| Neutron | an elementary particle having no charge, mass slightly greater than that of a proton
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| Mass Number | the integer nearest in value to the atomic weight of an atom and equal to the number of nucleons in the nucleus of the atom.
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| Atomic Number | the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleu
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| Ion | an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons
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| Isotope | any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus
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| Atomic Mass | the mass of an isotope of an element measured in units formerly based on the mass of one hydrogen atom taken as a unit
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| Atomic Mass | the mass of an isotope of an element measured in units formerly based on the mass of one hydrogen atom taken as a unit
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| Valence electrons | an electron of an atom, located on the outermost shell
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| Octet | any group of eight
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| Excited State | any of the energy levels of a physical system, esp. an atom, molecule, etc., that has higher energy than the lowest energy level.
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| Ionization Energy | the amount of energy required to remove an electron from an atom to form a cation
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| Electron Affinity | the quantitative measure, usually given in electron-volts, of the tendency of an atom or molecule to capture an electron and to form a negative ion.
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| Electronegativity | assuming negative potential when in contact with a dissimilar substance
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