Study

The Historical Development of Atomic Theory

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  • Which particle is J.J. Thomson credited with discovering?
    electron
  • Which statement BEST summarizes the importance of Ernest Rutherford's gold foil experiment?
    It showed that a nucleus occupies a small part of the whole atom.
  • Which scientist is credited with developing the first scientific atomic theory?
    John Dalton
  • What could J. J. Thomson conclude from his experiments?
    Atoms must balance positive and negative particles.
  • Which atomic model was proposed as a result of J.J. Thomson's work?
    the plum pudding model
  • Which statement is MOST LIKELY true?
    Ernest Rutherford's experiment led to the nuclear model of the atom.
  • Whose work directly resulted in the development of an atomic model that has negative electrons stuck within a sea of positive material?
    Thomson
  • What did Ernest Rutherford's gold foil experiment demonstrate about atoms?
    Their positive charge is located in a small region that is called the nucleus.
  • Which activity BEST demonstrates Ernest Rutherford's creativity?
    Designing an experiment to test the plum pudding model
  • From his experiments, J.J. Thomson concluded that
    atoms contain small negatively charged particles that are called electrons
  • Which activity is the best demonstration of J.J. Thomson’s use of creativity in his work?
    Interpreting the results of his experiment
  • How did the development of the earliest idea about atoms differ from the later work of scientists?
    It was based on the thoughts of an early philosopher.
  • Which conclusion could be made from Ernest Rutherford's gold foil experiment?
    Atoms are made up of mostly empty space.
  • Which BEST describes the effect of J.J. Thomson's discovery?
    The accepted model of the atom was changed.
  • Which scientist provided a foundation for John Dalton's work on the atomic structure?
    Joseph Proust
  • Which statement BEST describes John Dalton's use of creativity in his work?
    He reinterpreted and retested Joseph Proust's results.