Chemistry

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Author:
cj8
ID:
286550
Filename:
Chemistry
Updated:
2014-10-21 16:05:03
Tags:
Chemistry
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Description:
Chapter 4 terms
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  1. the
  2. a weighed average mass of the atoms in a naturally occurring sample of the element
    atomic mass
  3. one twelfth of the mass of a carbon-12 atom
    atomic mass unit (amu)
  4. atoms that have the same number of protons but diff numbers of neutrons
    isotope
  5. the total number of protons and neutrons in an atom
    atomic mass
  6. the number of protons in the nucleus of an atom of that element
    atomic number
  7. tiny central core of an atom and is composed of protons and neutrons
    nucleus
  8. subatomic particles with no electric charge but with a mass nearly equal to that of a proton
    neutron
  9. positively charged subatomic particles
    proton
  10. a glowing beam that travels from the cathode to the anode
    cathode ray
  11. negatively charged subatomic particles
    electrons
  12. first theory to relate chemical changes to events at the atomic level
    daltons atomic theory
  13. the smallest particle of an element that retains its identity in a chemical reaction
    atom

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