Quick Chem. Review
Date:
Name:
1.
Experimental evidence indicates that the nucleus
of an atom
5.
A.
contains most of the mass of the atom
A.
protons and electrons
B.
contains a small percentage of the mass of
the atom
B.
positrons and neutrons
C.
has no charge
C.
protons and neutrons
D. positrons and electrons
D. has a negative charge
2.
What is the total number of electrons in a Mg2+
ion?
A.
3.
10
B.
2
C.
12
6.
D. 24
Which element is a metalloid (semimetal)?
A.
4.
Which particles are found in the nucleus of an
argon atom?
Mg
B.
Si
C.
Cr
Which type of reaction occurs when nonmetal
atoms become negative nonmetal ions?
oxidation
B.
C.
substitution
D. condensation
A.
The nucleus contains positively charged
electrons.
B.
The nucleus contains negatively charged
protons.
C.
The nucleus has a positive charge and is
surrounded by negatively charged electrons.
D. The nucleus has a negative charge and is
surrounded by positively charged electrons.
D. Ar
A.
Which statement describes the structure of an
atom?
7.
The correct formula for sodium oxide is
A.
reduction
page 1
SO2
B.
S2 O
C.
NaO2
D. Na2 O
8.
9.
In the modern Periodic Table, the elements are
arranged in order of increasing
A.
atomic number
B.
C.
oxidation number
D. valence number
6
B.
8
C.
18
H+
B.
Li+
C.
13.
D. Rb+
8
B.
2
C.
18
D. 32
What is the atomic number of an element that has
six protons and eight neutrons?
A.
D. 32
14.
Na+
The maximum number of electrons that may be
found in the third principal energy level is
A.
Which ion has no electrons?
A.
11.
mass number
What is the maximum number of electrons that
can occupy the second principal energy level?
A.
10.
12.
6
B.
2
C.
8
D. 14
The arrangement of the elements in the present
Periodic Table is based on atomic
A.
mass
B.
number
C.
radius
D. density
Which statement explains why a xenon atom is
electrically neutral?
A.
The atom has fewer neutrons than electrons.
B.
The atom has more protons than electrons.
C.
The atom has the same number of neutrons
and electrons.
15.
What is the total number of valence electrons in
an atom with a total of 13 protons?
A.
D. The atom has the same number of protons
and electrons.
page 2
1
B.
2
C.
3
D. 4
Quick Chem. Review
16.
The total number of electrons in a neutral atom of
every element is always equal to the atom's
A.
mass number
B.
number of neutrons
C.
number of protons
20.
What is the total number of electrons found in an
atom of sulfur?
A.
6
B.
8
C.
16
D. 32
D. number of nucleons
17.
The atoms of some elements can be made
radioactive by
A.
placing them in a magnetic eld
B.
bombarding them with high-energy particles
C.
separating them into their isotopes
21.
How many electrons are contained in an Au3+ ion?
A.
76
B.
79
C.
82
D. 197
D. heating them to a very high temperature
18.
The formula H2 represents one
A.
gram
B.
C.
atom
D. molecule
22.
liter
Beryllium is classi ed as
A.
an alkaline earth metal
B.
an alkali metal
C.
a transition metal
D. a noble gas
19.
When a lithium atom forms an Li+ ion, the
lithium atom
A.
gains a proton
B.
gains an electron
C.
loses a proton
D. loses an electron
page 3
Quick Chem. Review
23.
The diagram below represents the nucleus of an
atom.
26.
Which change of phase represents sublimation?
A.
solid to liquid
B.
solid to gas
C.
liquid to gas
D. liquid to solid
What are the atomic number and mass number of
this atom?
A.
The atomic number is 9 and the mass number
is 19.
B.
The atomic number is 9 and the mass number
is 20.
C.
The atomic number is 11 and the mass
number is 19.
27.
D. The atomic number is 11 and the mass
number is 20.
24.
A.
25.
28.
What is the total number of electrons present in
an atom of 59
Co ?
27
27
B.
32
C.
59
D. 86
Germanium is classi ed as a
29.
A.
metal
B.
metalloid
C.
nonmetal
D. noble gas
Compared to a calcium atom, the calcium ion
Ca2+ has
A.
more protons
B.
C.
more electrons
D. fewer electrons
Which kind of emission is most similar to
high-energy X-rays?
A.
alpha
B.
C.
neutron
D. gamma
beta
If the nucleus of an atom is represented as 24
X,
11
the atom is
A.
page 4
fewer protons
Na
B.
Al
C.
Mg
D. Br
Quick Chem. Review
30.
A.
31.
33.
The number of protons in the nucleus of 32
P is
15
15
B.
17
C.
32
D. 47
The pair of elements with the most similar
chemical properties are
A.
Mg and S
B.
C.
Mg and Ca
D. S and Ar
34.
Ca and Br
A.
ammonia
B.
C.
methane
D. water
Given the table below that shows students'
examples of proposed models of the atom:
argon
Which is the atomic number of an atom with six
valence electrons?
A.
35.
32.
Which substance can not be broken down by a
chemical reaction?
6
B.
8
C.
10
D. 12
Which symbol represents an alkaline earth
element?
A.
Na
B.
Mg
C.
Ne
D. Ag
Proposed Models of the Atom
Model
Location of Protons
Location of Electrons
A
in the nucleus
speci c shells
B
in the nucleus
C
dispersed throughout the atom
regions of most probable
location
speci c shells
D
dispersed throughout the atom
regions of most probable
location
Which model correctly describes the locations
of protons and electrons in the wave-mechanical
model of the atom?
A.
A
B.
B
C.
C
36.
D. D
What is the total number of electrons in an atom
of an element with an atomic number of 18 and a
mass number of 40?
A.
page 5
18
B.
22
C.
40
D. 58
Quick Chem. Review
37.
38.
In the modern wave-mechanical model of the
atom, the orbitals are regions of the most probable
location of
A.
protons
B.
C.
electrons
D. positrons
39.
A.
decreases
C.
remains the same
B.
K
B.
B
C.
I
D. S
N
D. Er
neutrons
40.
As an atom becomes an ion, its mass number
A.
Which element is a member of the halogen family?
Which element is a noble gas?
A.
increases
page 6
W
B.
Ar
C.
Quick Chem. Review
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Quick Chem. Review
11/18/2024
1.
Answer:
Points:
A
1
15.
Answer:
Points:
C
1
2.
Answer:
Points:
A
1
16.
Answer:
Points:
C
1
3.
Answer:
Points:
B
1
17.
Answer:
Points:
B
1
4.
Answer:
Points:
B
1
18.
Answer:
Points:
D
1
5.
Answer:
Points:
C
1
19.
Answer:
Points:
D
1
6.
Answer:
Points:
C
1
20.
Answer:
Points:
C
1
7.
Answer:
Points:
D
1
21.
Answer:
Points:
A
1
8.
Answer:
Points:
A
1
22.
Answer:
Points:
A
1
9.
Answer:
Points:
B
1
10.
Answer:
Points:
23.
Answer:
Objective:
Points:
B
I.06B
1
A
1
11.
Answer:
Points:
24.
Answer:
Points:
A
1
D
1
12.
Answer:
Points:
25.
Answer:
Points:
B
1
C
1
13.
Answer:
Points:
26.
Answer:
Points:
B
1
A
1
14.
Answer:
Points:
27.
Answer:
Points:
D
1
B
1
28.
Answer:
Points:
D
1
Teacher's Key
29.
Answer:
Points:
A
1
30.
Answer:
Points:
A
1
31.
Answer:
Points:
C
1
32.
Answer:
Points:
B
1
33.
Answer:
Points:
B
1
34.
Answer:
Points:
B
1
35.
Answer:
Points:
B
1
36.
Answer:
Points:
A
1
37.
Answer:
Points:
C
1
38.
Answer:
Points:
C
1
39.
Answer:
Points:
C
1
40.
Answer:
Points:
B
1
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