Pretest

Question 1

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

Revolt · Accepted Answer

electron

Question 2

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

Revolt · Accepted Answer

the plum pudding model

Question 3

Which scientist provided a foundation for John Dalton’s work on the atomic structure?

Revolt · Accepted Answer

Joseph Proust

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

How did the development of the earliest idea about atoms differ from the later work of scientists?

Revolt · Accepted Answer

It was based on the thoughts of an early philosopher.

Question 6

From his experiments, J. J. Thomson concluded that

Revolt · Accepted Answer

atoms contain small negatively charged particles that are called electrons.

Question 7

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

Revolt · Accepted Answer

The accepted model of the atom was changed.

Question 10

Which scientist is credited with developing the first scientific atomic theory?

Revolt · Accepted Answer

John Dalton

Pretest Answers