X Chapter 4
Test Review
The Atomic Theory
The smallest particle that still
retains the property of an
element is called what?
A. neutron
B. atom
C. electron
D. molecule
In the Schrödinger model, what is
the name for where an electron is
found 90% of the time?
A.Energy
level
B.Isotope
C.Ground
D.Orbital
state
The higher energy level for an
electron is called what in the
Bohr model?
A. ground state
B. orbital
C. excited state
D. energy level
What must be equal in a
neutral atom?
A.
B.
C.
Neutrons and protons
Electrons and neutrons
Protons and electrons
Atoms with a charge are
called what?
A.
B.
C.
D.
Ions
Cations
Anions
Isotopes
In the isotope notation shown
below, what does the Z and
A stand for? Z X
A
A.
B.
C.
D.
Z
Z
Z
Z
=
=
=
=
atomic symbol, A = atomic #
mass #, A = atomic #
mass #, A = atomic symbol
atomic #, A = mass #
Who discovered the electron?
A.
B.
C.
D.
JJ Thomson
Robert Millikan
Ernest Rutherford
James Chadwick
Who discovered the nucleus?
A.
B.
C.
D.
JJ Thomson
Robert Millikan
Ernest Rutherford
James Chadwick
What is the mass number if an
atom has 14 neutrons, 15
protons, and 16 electrons?
A.
B.
C.
D.
45
31
30
29
How many protons, neutrons,
and electrons are in the
following sample? 80 Br
35
A.
B.
C.
D.
p+
p+
p+
p+
=
=
=
=
35,
35,
45,
35,
n
n
n
n
=
=
=
=
45,
80,
35,
45,
eeee-
=
=
=
=
80
35
45
35
How many protons, neutrons,
and electrons are in the
following sample? 59 Co2+
27
A.
B.
C.
D.
p+
p+
p+
p+
=
=
=
=
27, n = 32,
32, n = 27,
27, n = 32,
27, n = 59,
eeee-
=
=
=
=
27
32
25
25
What is the isotope notation
for phosphorous-31?
A. 3115P
B. 1531P
C. 4615P
D. 3015P
What is Rutherford’s famous
experiment in which he
discovered the nucleus?
A.
B.
C.
D.
Oil drop experiment
Cathode ray tube experiments
Gold-foil experiment
Plum pudding experiment
Who is credited with the plum
pudding model of the atom?
A.
B.
C.
D.
JJ Thomson
Robert Millikan
Ernest Rutherford
James Chadwick
Who discovered the neutron?
A.
B.
C.
D.
JJ Thomson
Robert Millikan
Ernest Rutherford
James Chadwick
What is the atomic number equal
to?
A.
B.
C.
D.
The # of electrons in the atom
Sum of protons & neutrons in
the atom
The mass number
The # of protons in the
nucleus
What is the mass number equal
to?
A.
B.
C.
D.
The # of protons in the
nucleus
The sum of the protons &
neutrons in the nucleus
The # of electrons in the atom
The charge on an ion
Which of the following are found
in the nucleus of an atom?
A.
B.
C.
D.
E.
protons
neutrons
electrons
More than one of the above
None of the above
Which of the following pairs
below are isotopes?
A.
B.
C.
Carbon-12 and Carbon-13
Uranium-238 and Neptunium-238
Chlorine-35 and Fluorine-19
What is the atomic mass on
the periodic table equal to?
A.
The weighted average of the
masses of all naturally occurring
isotopes
B.
The sum of the protons & neutrons
in the nucleus
C.
The number of protons in the
nucleus
Schrodinger is credited with
which model of the atom?
A.
B.
C.
D.
The plum pudding model
The billiard ball model
The quantum mechanical
model
The Bohr model
How many protons are in the
nucleus of a nitrogen atom?
A.
B.
C.
D.
14 protons
21 protons
7 protons
8 protons
How many neutrons are in the
nucleus of a Iodine-127
atom?
A.
B.
C.
D.
53 neutrons
127 neutrons
180 neutrons
74 neutrons
What does the 34 represent in
sulfur-34?
A.
B.
C.
D.
Atomic number
Mass number
Atomic mass
Electrons in the atom
If an iron ion has a charge of
+2, how many electrons
does the ion have?
A.
B.
C.
24 electrons
26 electrons
28 electrons