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Atomic Theory Quiz

Total questions: 20

Worksheet time: 19mins

Name
Class
Date
1.

Which scientist discovered the electron?

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

2.

Which scientist described the atom as "indivisible" or cannot be divided?

(other than Democritus)

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

3.

Which scientist used the cathode-ray in his experiments?

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

4.

Which scientist created the "Plumb Pudding" model of the atom?

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

5.

Which scientist conducted an experiment using gold foil?

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

6.

Which scientist discovered the nucleus?

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

7.

Which scientist proposed that the atom had a positive nucleus and was mostly empty space?

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

8.

Which scientist described that atom as have electrons traveling in orbits with certain energy levels?

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

9.

Which scientist proposed that atom cannot be created or destroyed but rearranged in specific ratios?

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

10.

Which scientist proposed the "electron cloud" model of the atom?

(Not Heisenberg)

a)

JJ Thomson

b)

John Dalton

c)

Neils Bohr

d)

Ernest Rutherford

e)

Erwin Schrodinger

11.

Which of these is the correct order of atomic models

a)

solid sphere, plumb pudding, atom with nucleus, electrons on energy level, electron cloud

b)

solid sphere, plumb pudding, atom with nucleus, electron cloud, electrons on energy level

c)

plumb pudding, solid sphere, atom with nucleus, electrons on energy level, electron cloud

d)

plumb pudding, solid sphere, atom with nucleus, electron cloud, electrons on energy level

12.

Neils Bohr discovered that electrons could (a)   between energy levels.

13.

The first person to propose a theory about an atom was ___________.

a)
Democritus
b)
Rutherford
c)
Dalton
d)
Aristotle
14.
Rutherford's gold foil experiment provided evidence that...
a)
Negative and positive charges are spread evenly throughout the atom.
b)
Alpha particles have a positive charge.
c)
Gold is not a dense as previously thought.
d)
There is a dense positively charged nucleus at the center of an atom.
15.
What contribution did John Dalton make to atomic theory? 
a)
He discovered that every atom was positively charged. 
b)
He discovered that every element consisted of one type of atom.  
c)
He discovered that atoms had nuclei. 
d)
He discovered that atoms could be divided into smaller parts. 
16.

What subatomic particle was discovered in the cathode ray tube experiment?

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

17.
John Dalton stated:
a)
elements are made of atoms
b)
atoms of a given element are identical
c)
atoms cannot be subdivided, created, nor destroyed
d)
all of the above
18.
The word atom comes from a Greek word "atomos" that means
a)
Invisible
b)
Indivisible
c)

Divided

d)

Destroyed

19.
Which is the correct sequence of the scientists who made major changes in the model of the atom?
1-JJ Thomson
2-Erwin Schrodinger
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford
a)
2, 1, 4, 3, 5
b)
3, 1, 5, 4, 2
c)
5, 3, 2, 1, 4
d)
4, 3, 2, 1, 5
20.
Niels Bohr suggested that electrons.......
a)
are found in specific orbits
b)
electrons are scattered throughout the atom
c)
electrons move according to their energy level
d)
electrons are positive

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