2. The Structure of the Atom
   
   1. Define each of the following:
      a) atom
      b) electron
      c) nucleus
      d) proton
      e) neutron
      
   2. Describe one conclusion made by each of the following scientists that led to the development of the current atomic theory:
      a) Thomson
      b) Millikan
      C) Rutherford
      
   3. Prepare a table listing the three subatomic particles in column one, in column two indicate the location in the atom for each particle, in column three indicate the mass of each particle, in column four indicate the relative charge of each particle.
      
   4. Why is the cathode-ray tube in Figure 3-4 connected to a vacuum pump?
      
   5. Draw a cathode ray tube and
      a) indicate the anode and the cathode
      b) indicate the charge of the cathode and the anode
      c) indicate why each has the charge it does
      
   6. a) Define atom
      b) What are the two regions in the atom?
      
   7. Summarize Rutherford's model of an atom, and explain how he developed this model based on the results of his famous gold-foil experiment.
      
   8. What one thing conclusively identifies an element?
      

Back