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WorksheetsThe Atom chapter review - EHS
Total questions: 42
Worksheet time: 32mins
Name
Class
Date
1.
In Niels Bohr’s model of the atom, electrons move
a)
like balls rolling down a hill.
b)
like popcorn in a popcorn popper.
c)
like beach balls on water waves.
d)
like planets orbiting the sun.
2.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
3.
True or False? Neutrons have a negative charge
a)
True
b)
False
4.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
5.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
6.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
7.
Which is the smallest?
a)
electron
b)
proton
c)
atom
d)
neutron
8.
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
9.
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
a)
15
b)
31
c)
16
d)
47
10.
An atom has an atomic number of 30 and a mass number of 65. How many neutrons are in the atom?
a)
30
b)
65
c)
35
d)
95
11.
An atom has 5 protons and 7 neutrons. What is the atomic number of the atom?
a)
5
b)
7
c)
2
d)
12
12.
What is the Atomic Number?
a)
7
b)
6.941
c)
3
d)
6
13.
How many Protons+Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
6
14.
How many Protons+Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
6
15.
How many Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
4
16.
How many Protons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
17.
How many Electrons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
18.
All atoms of the same element have the same
a)
atomic mass
b)
mass number
c)
number of neutrons
d)
atomic number
19.
The atomic number of an atom is _____________________.
a)
The mass of the atom
b)
The number of protons added to the number of neutrons
c)
The number of protons
d)
Negatively charged
20.
An electron is in a region outside the nucleus. An electron ____________.
a)
Is larger than a proton and has no charge
b)
Has less mass than a proton and has a negative charge
c)
Is smaller than a proton and has no charge
d)
Has a positive charge
21.
The atomic mass of an element is equal to:
a)
# of protons
b)
# of neutrons
c)
# of electrons
d)
Total # of protons and neutrons.
22.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
23.
What quantities vary between isotopes of an element?
a)
protons, electrons, and atomic mass
b)
protons, electrons, and atomic number
c)
neutrons and electrons
d)
neutrons and mass number
24.
What element is this? What is the mass number of this atom?
a)
sodium, 23
b)
magnesium, 23
c)
magnesium, 12
d)
sodium, 11
25.
What do scientists use to predict the locations of electrons in atoms?
a)
Algebra
b)
Calculus
c)
Probability
d)
Geometry
26.
What does the electron cloud model describe?
a)
the precise locations
of electrons in atoms
b)
the mass of the
electrons in an atom
c)
the most likely locations of electrons in atoms
d)
the number of
electrons in an atom
27.
The light/color of fireworks is caused by electrons emitting energy as they move from lower to higher energy levels.
a)
move from lower to higher energy levels.
b)
collide with the nucleus.
c)
collide with other electrons.
d)
move from higher to lower energy levels.
28.
When all the electrons in an atom are in orbitals with the lowest possible energy, the atom is in its ____________________ state.
a)
excited
b)
ground
c)
free
d)
floor
29.
The difference between a sample of heavy water and regular water is that a hydrogen atom in heavy water has an extra ____________________.
a)
electron
b)
proton
c)
neutron
d)
fountain
30.
Which statement about subatomic particles is true?
a)
Protons and electrons have almost the same mass
b)
Protons and electrons have opposite charges.
c)
like protons and electrons, neutrons have a charge.
d)
Protons and neutrons have the same charge.
31.
Which statement best describes the process by which an electron in an atom emits light energy?
a)
an electron continuously emits light as it moves in its energy level
b)
An electron absorbs light as it moves from a lower energy level to a higher energy level
c)
An electron releases light energy as it moves from a higher energy level to a lower energy level
d)
An electron emits light energy as regular intervals as more electrons join its energy level
32.
Who is responsible for the model of the atom where electrons travel in specific paths or orbits around the nucleus?
a)
Einstein
b)
Bohr
c)
Planck
d)
Dalton
33.
True or False: Electrons are considered stable at their ground state.
a)
TRUE
b)
FALSE
34.
As an electron falls down into its ground state it....
a)
absorbs energy
b)
releases energy
35.
True or False: Electrons can exist in between energy levels.
a)
TRUE
b)
FALSE
36.
an electron moves ___________ the nucleus when it moves to its excited state
a)
towards
b)
away from
c)
inside
d)
around
37.
Light is emitted when an electron moves from the ________ state to the _________ state
a)
excited, ground
b)
ground, excited
38.
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
39.
A single orbital in any level can only hold _______ electrons.
a)
2
b)
4
c)
6
d)
8
40.
Which type of subatomic particles have the LEAST amount of mass?
a)
protons
b)
electrons
c)
neutrons
d)
nucleus
41.
What type of subatomic particles are found in the cloud?
a)
neutrons
b)
electrons
c)
protons
d)
reactions
42.
How are electrons arranged in an atom?
a)
In groups of five
b)
In energy levels
c)
By color
d)
By shape
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