Answers2003350 Chemistry HONORS Sem 1 - MarezThe Historical Development of Atomic Theory

The Historical Development of Atomic Theory Answers

8 verified answers
1
Free Preview

Which activity is the best demonstration of J.J. Thomson’s use of creativity in his work?

A
ignoring observations in his experiment
B
interpreting the results of his experiment
C
physically assembling the apparatus for his experiment
D
reading about Joseph Proust’s work
2
Free Preview

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

A
Their positive charge is located in a small region that is called the nucleus.
B
Their negative charge is located in small particles that are called electrons.
C
Their nucleus makes up the majority of the volume of the atom.
D
Their electrons are floating in a sea of positive charges.
3

Which activity best demonstrates Ernest Rutherford’s creativity?

A
questioning the correctness of the plum pudding model
B
designing an experiment to test the plum pudding model
C
making observations about the gold foil experiment
D
summarizing the conclusions from the gold foil experiment as a theory
4

From his experiments, J. J. Thomson concluded that

A
cathode ray particles can move at very fast speeds.
B
cathode ray particles can be moved by electric current.
C
atoms contain small positively charged particles that are called protons.
D
atoms contain small negatively charged particles that are called electrons.
5

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

A
The accepted model of the atom was changed.
B
The accepted model of the atom was supported.
C
Cathode ray tubes were no longer used in experiments due to poor results.
D
Cathode ray tubes became the only instrument of use in the study of atoms.
6

Question text not available

Answer not available
7

Which statement best summarizes the importance of Ernest Rutherford’s gold foil experiment?

A
It proved that all of John Dalton’s postulates were true.
B
It verified J. J. Thomson’s work on the atomic structure.
C
It showed that an electron circles a nucleus in a fixed-energy orbit.
D
It showed that a nucleus occupies a small part of the whole atom.

Did you find these answers helpful?

The Historical Development of Atomic Theory…