The Historical Development of Atomic Theory

Question 1

Which particle is J. J. Thomson credited with discovering?

Revolt · Accepted Answer

electron

Question 2

From his experiments, J. J. Thomson concluded that

Revolt · Accepted Answer

atoms contain small negatively charged particles that are called electrons.

Question 3

What did Ernest Rutherford’s gold foil experiment demonstrate about atoms?

Revolt · Accepted Answer

Their positive charge is located in a small region that is called the nucleus.

Question 4

Which conclusion could be made from Ernest Rutherford’s gold foil experiment?

Revolt · Accepted Answer

Atoms are made up of mostly empty space.

Question 5

Which statement best describes John Dalton’s use of creativity in his work?

Revolt · Accepted Answer

He reinterpreted and retested Joseph Proust’s results.

Question 6

Which best describes the effect of J. J. Thomson’s discovery?

Revolt · Accepted Answer

The accepted model of the atom was changed.

Question 7

Whose work directly resulted in the development of an atomic model that has negative electrons stuck within a sea of positive material?

Revolt · Accepted Answer

Thomson

Question 8

Which statement is most likely true?

Revolt · Accepted Answer

Ernest Rutherford’s experiment led to the nuclear model of the atom.

Question 9

Which atomic model was proposed as a result of J. J. Thomson’s work?

Revolt · Accepted Answer

the plum pudding model

Question 10

What could J. J. Thomson conclude from his experiments?

Revolt · Accepted Answer

Atoms must balance positive and negative particles.

The Historical Development of Atomic Theory Answers