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Worksheets1.C1.5 - 6 Atomic Theory
Total questions: 44
Worksheet time: 1hrs 2mins
Name
Class
Date
1.
Ernst Rutherford discovered which part of the atom through the use of gold foil?
a)
Proton
b)
Neutron
c)
Electron
d)
Orbitals
2.
Ernst Rutherford discovered that the atom is
a)
Compound of mostly empty space with negative electrons surrounding a positive nucleus
b)
A highly dense sphere of positive
c)
A highly dense sphere of a negative space
d)
Composed mostly of empty space with positive electrons surrounding a negative nucleus
3.
J.J. Thompson discovered the ____________. His model is called the plum pudding model which we sometimes call the chocolate chip model.
a)
proton
b)
electron
c)
neutron
d)
nucleus
4.
The experiment used by Ernest Rutherford to discover the nucleus of an atom.
a)
Cathode Ray Experiment
b)
Gold Foil Experiment
c)
Reflector Experiment
d)
Plum Pudding Experiment
5.
Who came up with this model of an atom?
a)
J.J. Thompson
b)
Ernest Rutherford
c)
Neils Bohr
d)
James Chadwick
6.
Subatomic particle that has a negative charge and is located outside of the nucleus.
a)
Electron
b)
Proton
c)
Neutron
d)
Voltron
7.
What was INCORRECT about John Dalton's theory about atoms?
a)
All matter is made of atoms
b)
Atoms have no parts
c)
Atoms are too small to see
d)
Atoms of a given element are identical
8.
True or False: All matter is made up of atoms.
a)
True
b)
False
9.
What subatomic particle changes the name of the atom?
a)
Neutron
b)
Proton
c)
Voltron
d)
Electron
10.
What two particles affect the charge of an atom?
a)
Electrons & Neutrons
b)
Protons & Electrons
c)
Neutrons & Protons
11.
True or False: The majority of an atom is made up of empty space
a)
True
b)
False
12.
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.
13.
Place the following scientists in order, from earliest to latest:
A) Ernest Rutherford
B) J.J. Thomson
C) John Dalton
A) Ernest Rutherford
B) J.J. Thomson
C) John Dalton
a)
B,C,A
b)
C,A,B
c)
A,C,B
d)
C,B,A
14.
What scientist is best known for his "Plum Pudding" model of the atom?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
15.
What is the smallest particle of an element?
a)
atom
b)
proton
c)
electron
d)
neutron
16.
Some atoms are large enough to see with your eyes.
a)
true
b)
false
17.
An atom's overall charge is ________.
a)
positive
b)
depends
c)
neutral
d)
negative
18.
How do scientists know how atoms are structured?
a)
By looking at them under a microscope
b)
By running experiments that expose their properties
c)
By examining only the largest atoms
d)
By splitting them apart
19.
What can you conclude from the fact that scientists continue to update the atomic model?
a)
New information about atoms continues to be discovered
b)
Old information about atoms is completely useless
c)
Scientists did not have any information about atoms until a few years ago
d)
Scientists still have no idea what atoms look like
20.
What does the nucleus of an atom contain?
a)
Electrons and neutrons
b)
Protons and neutrons
c)
Neutrinos and positrons
d)
DNA and RN
21.
What element is this? What is the mass number of this atom?
a)
sodium, 23
b)
magnesium, 23
c)
magnesium, 12
d)
sodium, 11
22.
a neutron has this charge
a)
negative
b)
positive
c)
neutral
23.
an electron has this charge
a)
positive
b)
negative
c)
neutral
24.
What is the atomic number?
a)
number of protons
b)
number of neutrons
25.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
26.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
27.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
28.
Which of these is the proton.
a)
A
b)
B
c)
C
d)
None
29.
Which of these is the electron?
a)
A
b)
B
c)
C
d)
D
30.
B and C are found in the ______ of an atom.
a)
Energy levels
b)
Space
c)
Nucleus
d)
Outside
31.
How many protons does this atom have?
a)
2.5
b)
6
c)
5
d)
10.811
32.
Which number here is my atomic number?
a)
5
b)
10.811
33.
How many Electrons
a)
2.5
b)
5
c)
6
d)
10.81
34.
Which is the smallest subatomic particle
a)
proton
b)
neutron
c)
electron
d)
nucleus
35.
What part of the atom is the arrow pointing to?
a)
electron
b)
neutron
c)
proton
d)
electron shell
36.
What part of the atom is the arrow pointing to?
a)
electron
b)
nucleus
c)
neutron
d)
proton
37.
What part of the atom is the arrow pointing to?
a)
electron shell
b)
neutron
c)
proton
d)
electron
38.
What part of the atom is the arrow pointing to?
a)
nucleus
b)
proton
c)
electron shell
d)
electron
39.
What part of the atom is the arrow pointing to?
a)
neutron
b)
nucleus
c)
proton
d)
electron
40.
What is the mass of a neutron?
a)
1
b)
Almost 0
41.
What is the mass of a proton?
a)
1
b)
Almost 0
42.
What is the mass of an electron?
a)
1
b)
Almost 0
43.
Which particle has the charge -1?
a)
Proton
b)
Electron
c)
Neutron
44.
Which particle has the charge +1?
a)
Proton
b)
Electron
c)
Neutron
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