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