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3 Written Questions

3 Multiple Choice Questions

  1. the average mass of all the isotopes of an element
  2. the sum of the number of neutrons and protons in an atomic nucleus
  3. a subatomic particle that has a positive charge and that is found in the nucleus of an atom

3 True/False Questions

  1. electron clouda subatomic particle that has a negative charge

          

  2. atomic mass unitthe average mass of all the isotopes of an element

          

  3. isotopea subatomic particle that has a positive charge and that is found in the nucleus of an atom

          

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