Chem 051 - Fundamentals of Chemistry » Winter 2021 » Exam 1
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Question #1
The name for SrCl2 is
A.
strontium(II) chloride
B.
strontium(I) chloride
C.
strontium(I) chloride(II)
D.
strontium chloride
E.
strontium dichloride
Question #2
Which of the following is a noble gas?
A.
CO2
B.
H2
C.
Ar
D.
O2
E.
N2
Question #3
The name for Li2O is ______________.
A.
Lithium oxide
B.
Lithium 2 oxide
C.
Lithium dioxide
D.
Lithium ion
Question #4
The maximum electron capacity of an f sublevel is
A.
10
B.
2
C.
14
D.
18
E.
6
Question #5
A piece of an unknown metal weighs 382.9 g and occupies a volume of 72.2 mL. What is the density of this metal?
A.
53.0 g/mL
B.
2.76 × 104 g/mL
C.
none of these
D.
5.30 g/mL
E.
0.189 g/mL
Question #6
A given set of f orbitals consists of ______________ orbital(s).
A.
9
B.
5
C.
3
D.
1
E.
7
Question #7
The electron configuration for the sulfur atom is
A.
1s22s22p63s23p5
B.
1s22s22p63s23p2
C.
1s22s22p63s5
D.
1s22s22p63s23p4
E.
none of these
Question #8
How many significant figures are in the number 60.02 × 105?
A.
2
B.
none of these
C.
4
D.
3
E.
5
Question #9
The number of protons in a given nucleus determines the
A.
number of electrons.
B.
atomic number.
C.
number of protons.
D.
number of isotopes.
E.
mass number.
Question #10
The symbol Fe stands for the element
A.
fluorine
B.
francium
C.
fermium
D.
iron
E.
tin
Question #11
True or false? Covalent bonding occurs when a metal reacts with a nonmetal.
A.
FALSE
B.
TRUE
Question #12
The number of d orbitals in the second principal energy level is
A.
6
B.
10
C.
2
D.
none of these
E.
14
Question #13
True or false: Covalent bonding occurs when electrons are shared by nuclei.
A.
TRUE
B.
FALSE
Question #14
A.
four
B.
two
C.
one
D.
three
E.
no
Question #15
The maximum number of electrons allowed in the p sublevel of the third principal level is
A.
3
B.
6
C.
2
D.
1
E.
8
Question #16
Which of the following is a nonmetal?
A.
cesium
B.
calcium
C.
carbon
D.
cerium
E.
copper
Question #17
Which of the following has the electron configuration 1s22s22p63s23p64s23d5?
A.
none of these
B.
Cr
C.
Ca
D.
Mn
E.
Br
Question #18
The number of protons in the nucleus of an atom is called its
A.
isotope number
B.
atomic number
C.
none of these
D.
valence
E.
mass number
Question #19
The number of protons in 200 80 Hg is
A.
200
B.
unknown
C.
dependent on ionic charge
D.
80
E.
120
Question #20
The correct name for LiCl is
A.
lithium monochloride
B.
lithium chloride
C.
lithium(I) chloride
D.
monolithium monochloride
E.
monolithium chloride
Question #21
The charge on a barium ion in its ionic compound is
A.
Various charges are possible.
B.
+1
C.
+2
D.
-1
E.
+3
Question #22
The binary compound PCl3 is called
A.
phosphorus chloride
B.
triphosphorus chloride
C.
none of these
D.
monophosphorus trichloride
E.
phosphorus trichloride
Question #23
Give the formula for dinitrogen pentoxide.
A.
N2O5
B.
N2O5
C.
NO25
D.
No25
Question #24
Which of the following is NOT a correct name–symbol combination?
A.
magnesium, Mn
B.
copper, Cu
C.
cobalt, Co
D.
boron, B
E.
beryllium, Be
Question #25
When an electron in the ground state absorbs energy, it goes to a(n) ______________ state.
A.
lower
B.
excited
C.
stable
D.
frenetic
Question #26
The correct formula for sodium sulfide is
A.
Na2S
B.
Na3S
C.
SSu
D.
NaS
E.
NaS2
Question #27
Which of the following compounds contains one or more covalent bonds?
A.
BaBr2
B.
CaO
C.
Cs2O
D.
NaCl
E.
CO2
Question #28
Which atomic particle determines the chemical behavior of an atom?
A.
none of these
B.
nucleus
C.
neutron
D.
proton
E.
electron
Question #29
Which of the following is an incorrect designation for an atomic orbital?
A.
1s
B.
2p
C.
2d
D.
3s
E.
4f
Question #30
The symbol for tin is
A.
Ti.
B.
Si.
C.
Sn.
D.
Tn.
E.
T.
Question #31
The energy levels of the hydrogen atom (and all atoms) are ______________, meaning that only certain discrete energy levels are allowed.
A.
quantized
B.
varied
C.
continuous
D.
ramp-like
E.
two of these
Question #32
How many neutrons are contained in an iodine nucleus with a mass number of 130?
A.
53
B.
130
C.
77
D.
73
E.
126
Question #33
Which element has the fewest electrons in its valence shell?
A.
Mg
B.
P
C.
Cs
D.
O
E.
Br
Question #34
The mass number of an atom equals
A.
the number of protons plus the number of neutrons per atom
B.
the atomic mass of the element
C.
the number of neutrons per atom
D.
the atomic number of the element
E.
none of the above
Question #35
The symbol Cs stands for the element
A.
curium
B.
cadmium
C.
calcium
D.
carbon
E.
cesium
Question #36
True or false? In naming ionic compounds, the cation is always named first and the anion second.
A.
TRUE
B.
FALSE
Question #37
A given set of d orbitals consists of ______________ orbital(s).
A.
3
B.
5
C.
1
D.
6
E.
none of these
Question #38
The maximum number of electrons allowed in each of the d orbitals is
A.
32
B.
2
C.
8
D.
18
E.
4
Question #39
Using the rules of significant figures, calculate the following: 14.8903 – 2.14 =
A.
13
B.
12
C.
12.75
D.
12.75
E.
12.7503
Question #40
Convert 67.6°F to kelvins.
A.
292.8 K
B.
340.6 K
C.
–205.4 K
D.
452.3 K
E.
–253.2 K
Question #41
The noble gases contain how many valence electrons?
A.
none of these
B.
0
C.
8
D.
7
E.
1
Question #42
The number 500,000 expressed in scientific notation is
A.
50 X 104
B.
500 X 103
C.
5.0 X 10-5
D.
5 X 105
E.
5 X 105
Question #43
How many electrons are in the third principal energy level (n = 3) of one atom of Fe?
A.
none of these
B.
8
C.
2
D.
18
E.
14
Question #44
Which of the following compounds contains an ionic bond?
A.
HCl(g)
B.
O2
C.
SO2
D.
NaCl
E.
CCl4
Question #45
The neutral atoms of all the isotopes of the same element have
A.
the same number of electrons.
B.
different numbers of protons.
C.
the same masses.
D.
the same mass numbers.
E.
equal numbers of neutrons.
Question #46
An atom with 46 protons has a mass number of 102. The atom is
A.
U
B.
Pd
C.
No
D.
none of these
E.
Ba
Question #47
A.
does not contain a number.
B.
must be obtained through experimentation.
C.
contains a number and a unit.
D.
none of these
E.
always makes a comparison.
Question #48
The alkaline earth metals have how many valence electrons?
A.
2
B.
8
C.
7
D.
3
E.
1
Question #49
How many significant figures should there be in the answer when you divide 4.1 by 7.464?
A.
4
B.
3
C.
1
D.
2
E.
7
Question #50
Give the formula for sodium bromide.
A.
Nabr
B.
NABr
C.
Na3S
D.
NaBr
Question #51
The number of significant figures in 0.074100 × 10–4 is
A.
4
B.
3
C.
5
D.
7
E.
6
Question #52
Choose the pair in which the components have the same charge.
A.
a neutron and a hydrogen atom
B.
an electron and a neutron
C.
a hydrogen atom and an electron
D.
a proton and a hydrogen atom
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