History Of The Atomic Theory Question Preview (ID: 24229)


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The Greek philosopher who first described the atom as being indivisible and indestructible was
a) Aristotle
b) Democritus
c) Dalton
d) Socrates

Which of the following is NOT part of Dalton's atomic theory?
a) Atoms are small and solid, like a marble.
b) Atoms cannot be divided into smaller units.
c) Atoms of an element are alike and can be combined with atoms of other elements.
d) Atoms are made up of protons, neutrons, and electrons.

In the 1800s, Thomson's experiments with the cathode ray tube showed that atoms
a) contain smaller negatively charged particles (electrons).
b) are indivisible.
c) have a small, dense, positive nucleus.
d) have positively charged particles called protons.

In his gold foil experiment, ________________________ discovered that atoms contain a very small, dense, positively charged nucleus.
a) Rutherford
b) Thomson
c) Bohr
d) Dalton

_______________________'s model was referred to as the plum pudding model because it showed electrons scattered throughout an atom.
a) Dalton
b) Thomson
c) Rutherford
d) Bohr

In his model, atoms contained a very dense center (which was positively charged) and electrons outside of it.
a) Democritus
b) Dalton
c) Thomson
d) Rutherford

The scientist who said that electrons are located in set paths (orbits) around the nucleus of the atom was
a) Thomson
b) Rutherford
c) Bohr
d) Schrodinger

Schrodinger said that
a) electrons behave in a wave-like pattern.
b) protons are found outside the nucleus.
c) neutrons are found outside the nucleus.
d) electrons are found inside the nucleus.

The first person to discover that atoms are NOT indivisible was
a) Democritus
b) Dalton
c) Thomson
d) Rutherford

Which of the following places the components in order as they were discovered?
a) neutrons, electrons, protons, quarks
b) quarks, protons, neutrons, electrons
c) electrons, protons, neutrons, quarks
d) protons, quarks, electrons, neutrons

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