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Question 1

Based on the article “Will the real atomic model please stand up?,” why did J.J. Thomson experiment with cathode ray tubes?

Revolt · Accepted Answer

to determine that electric beams in cathode ray tubes were actually made of particles

Question 2

What did J.J. Thomson’s experiments with cathode ray tubes imply about the mass of an electron?

Revolt · Accepted Answer

Electrons are many thousand times smaller than the nucleus and negatively charged.

Question 3

What did Ernest Rutherford expect to happen when he aimed a beam of particles at a thin gold foil?

Revolt · Accepted Answer

The particles would be deflected slightly after passing through the foil.

Question 4

Bohr’s atomic model differed from Rutherford's because it explained that

Revolt · Accepted Answer

electrons exist in specified energy levels surrounding the nucleus.

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