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Study
The Historical Development of Atomic Theory
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Which atomic model was proposed as a result of J.J. Thomson's work?
the plum pudding model
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What could J. J. Thomson conclude from his experiments?
Atoms must balance positive and negative particles.
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From his experiments, J.J. Thomson concluded that
atoms contain small negatively charged particles that are called electrons
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Which statement is MOST LIKELY true?
Ernest Rutherford's experiment led to the nuclear model of the atom.
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Which BEST describes the effect of J.J. Thomson's discovery?
The accepted model of the atom was changed.
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Which activity BEST demonstrates Ernest Rutherford's creativity?
Designing an experiment to test the plum pudding model
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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.
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Whose work directly resulted in the development of an atomic model that has negative electrons stuck within a sea of positive material?
Thomson
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Which scientist provided a foundation for John Dalton's work on the atomic structure?
Joseph Proust
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Which statement BEST describes John Dalton's use of creativity in his work?
He reinterpreted and retested Joseph Proust's results.
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Which conclusion could be made from Ernest Rutherford's gold foil experiment?
Atoms are made up of mostly empty space.
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Which particle is J.J. Thomson credited with discovering?
electron
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Which scientist is credited with developing the first scientific atomic theory?
John Dalton
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Which activity is the best demonstration of J.J. Thomson’s use of creativity in his work?
Interpreting the results of his experiment
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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.
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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.
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