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History Of The Atomic Theory
Test Description: Review of the history of the atomic theory!
Instructions: Answer all questions to get your test result.
1) The Greek philosopher who first described the atom as being indivisible and indestructible was
A
Socrates
B
Aristotle
C
Democritus
D
Dalton
2) Which of the following is NOT part of Dalton's atomic theory?
A
Atoms cannot be divided into smaller units.
B
Atoms are made up of protons, neutrons, and electrons.
C
Atoms of an element are alike and can be combined with atoms of other elements.
D
Atoms are small and solid, like a marble.
3) In the 1800s, Thomson's experiments with the cathode ray tube showed that atoms
A
have positively charged particles called protons.
B
have a small, dense, positive nucleus.
C
contain smaller negatively charged particles (electrons).
D
are indivisible.
4) In his gold foil experiment, ________________________ discovered that atoms contain a very small, dense, positively charged nucleus.
A
Rutherford
B
Bohr
C
Thomson
D
Dalton
5) _______________________'s model was referred to as the plum pudding model because it showed electrons scattered throughout an atom.
A
Thomson
B
Bohr
C
Rutherford
D
Dalton
6) In his model, atoms contained a very dense center (which was positively charged) and electrons outside of it.
A
Rutherford
B
Dalton
C
Thomson
D
Democritus
7) The scientist who said that electrons are located in set paths (orbits) around the nucleus of the atom was
A
Thomson
B
Schrodinger
C
Rutherford
D
Bohr
8) Schrodinger said that
A
electrons are found inside the nucleus.
B
neutrons are found outside the nucleus.
C
protons are found outside the nucleus.
D
electrons behave in a wave-like pattern.
9) The first person to discover that atoms are NOT indivisible was
A
Thomson
B
Dalton
C
Rutherford
D
Democritus
10) Which of the following places the components in order as they were discovered?
A
electrons, protons, neutrons, quarks
B
protons, quarks, electrons, neutrons
C
quarks, protons, neutrons, electrons
D
neutrons, electrons, protons, quarks
*select an answer for all questions
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