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3 Written questions

3 Multiple choice questions

  1. a subatomic particle that has a negative charge
  2. the sum of the number of neutrons and protons in an atomic nucleus
  3. center of an atom made up of protons and neutrons

3 True/False questions

  1. atomic massa unit of mass that describes the mass of an atom or molecule

          

  2. protonthe smallest component of an element having the chemical properties of the element

          

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

          

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