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3 Written Questions

3 Multiple Choice Questions

  1. the average mass of all the isotopes of an element
  2. center of an atom made up of protons and neutrons
  3. a subatomic particle that has a negative charge

3 True/False Questions

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

          

  2. electron clouda subatomic particle that has a negative charge

          

  3. atomthe smallest component of an element having the chemical properties of the element

          

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