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WorksheetsAtomic Theory
Total questions: 40
Worksheet time: 22mins
Name
Class
Date
1.
What charge do electrons have?
a)
positive
b)
negative
c)
neutral
2.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
3.
All matter is made of what?
a)
energy
b)
atoms
c)
electrons
d)
compounds
4.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
5.
The atomic number of an elements is the total number of which particles in the nucleus?
a)
neutrons
b)
protons
c)
electrons
d)
protons and electrons
6.
Contributes basically no mass to an atom.
a)
protons
b)
neutrons
c)
electrons
d)
protons and neutrons
7.
An atom has 5 protons, 7 neutrons and 5 electrons. What is the mass number of the atom?
a)
5
b)
7
c)
2
d)
12
8.
An atoms overall charge is
a)
positive
b)
depends on its mood
c)
neutral
d)
negative
9.
In a neutral atom, what needs to be true?
a)
The number of protons and neutrons are the same
b)
The number of protons and electrons are the same
c)
The number of neutrons and electrons are the same
d)
None of the above
10.
Subatomic particle that determines the identity of the atom
a)
proton
b)
nucleus
c)
electron
d)
neutron
11.
Hydrogen has 1 proton. It's atomic number is:
a)
0
b)
1
c)
2
d)
cannot be determined
12.
An atom has 10 protons and a mass of 18. It has __ neutrons
a)
10
b)
18
c)
28
d)
8
13.
Which of the following has all of the subatomic particles that make up an atom?
a)
Protons, Nucleus, Electrons
b)
Neutrons, Nucleus, Protons
c)
Electrons, Quarks, Protons
d)
Electrons, Protons, Neutrons
14.
Which scientist is credited with discovering the negatively charge subatomic particles in the atom?
a)
Neils Bohr
b)
J.J. Thompson
c)
Ernest Rutherford
d)
Dalton
15.
Which of the following includes all of the subatomic particles found in the nucleus of an atom?
a)
Electrons and protons
b)
Electrons, protons, and neutrons
c)
Neutrons and electrons
d)
Protons and neutrons
16.
Where are electrons of an atom found?
a)
Nucleus
b)
Electron Cloud
c)
Some are in the nucleus and some in the electron cloud.
d)
They are moving everywhere.
17.
Which of the following is a subatomic particle with no charge that is found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
18.
Which of the following is a positively charged subatomic particle found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
19.
Ernst Rutherford discovered which part of the atom throught the use of gold foil?
a)
Proton
b)
Neutron
c)
Electron
d)
Orbitals
20.
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
21.
Bohr's Planetary Model represented what?
a)
Electrons spin around the nucleus in a fixed orbital
b)
Protons spin around the nucleus in fixed orbitals
c)
An atom is a round sphere shaped like a planet
d)
Every atom is a little planet
22.
What did James Chadwick discover?
a)
Neutron
b)
Proton
c)
Electron
d)
Who cares I want to go home!
23.
How did Rutherford discover the proton?
a)
Cathode tube ray experiment
b)
Gold Foil Experiment
c)
Planetary Model
d)
Plum Pudding Model
24.
Which statement is most accurate about electrons?
a)
They take up most of the space in an atom
b)
They take up the least space in an atom
c)
The have a neutral charge
d)
They compose most of the nucleus
25.
If an atom has an equal amount of Protons and electrons, what will its’ charge be?
a)
Positive
b)
Negative
c)
Neutral
d)
Infinite
26.
Which determines the mass of an element?
a)
Protons
b)
Neutrons
c)
Electrons
d)
Only Protons and Neutrons
27.
All atoms of the same element have the same
a)
atomic mass
b)
mass number
c)
number of neutrons
d)
atomic number
28.
The __________ contains the protons and neutrons of an atom, and is most of the mass of an atom
a)
Nucleus
b)
Atomic Number
c)
Atomic Mass
d)
Electrons
29.
A _________ is a positively charged particle of an atom.
a)
Electron
b)
Neutron
c)
Proton
d)
Atom
30.
A _________ is the particle of an atom that has no charge (neutral)
a)
Electron
b)
Neutron
c)
Proton
d)
Atom
31.
The ___________ is a negatively charged particle of an atom.
a)
Proton
b)
Neutron
c)
Electron
d)
Atom
32.
An ______________ is the same element, with the same number of protons, but different numbers of neutrons
a)
Atom
b)
Isotope
c)
Atomic Number
d)
Mass Number
33.
The __________________ is the sum of the protons and the neutrons in an atom.
a)
Atomic Number
b)
Mass Number
c)
Protons
d)
Neutrons
34.
Isotopes are forms of an element that have the same number of protons but a different number of electrons.
a)
True
b)
False
35.
Who propsed that matter was formed of small pieces taht oucld not be cut into smaller parts?
a)
Dalton
b)
Thomson
c)
Democritus
d)
Chadwick
36.
Who stated that all atoms of the same element are excacty alike?
a)
Democritus
b)
Dalton
c)
Thomson
d)
Borh
37.
Which 2 parts of the atom did Rutherford discover?
a)
electron & proton
b)
neutron & electron
c)
proton & electron
d)
proton & nucleus
38.
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
39.
the cloud theory states that .....
a)
protons exist in a could like region and move according to their energy level
b)
neutrons exist outside the nucleus in a cloudlike region
c)
electrons move in orbits in a cloudlike region
d)
electrons exist in a cloudlike region and their movement is related to their energy level
40.
An atom of the same element with the same number of protons but a different number of neutrons is called a/an..............
a)
isotope
b)
neurtonic
c)
positively charged atom
d)
negatively charged atom
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