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3 Written questions

3 Multiple choice questions

  1. a subatomic particle that has a negative charge
  2. a subatomic particle that has a positive charge and that is found in the nucleus of an atom
  3. a unit of mass that describes the mass of an atom or molecule

3 True/False questions

  1. atomic massthe average mass of all the isotopes of an element

          

  2. nucleusa subatomic particle that has a negative charge

          

  3. mass numberone of two or more atoms with the same atomic number but with different numbers of neutrons

          

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