Chem 051 - Fundamentals of Chemistry » Winter 2021 » Homework Week 2
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Chem 051 - Fundamentals of Chemistry ] course for $25 USD.
Existing Quiz Clients Login here
Question #1
The octet rule indicates that
A.
all of the shells in an atom hold a maximum of 8 electrons.
B.
ll of the noble gases have eight total electrons.
C.
all of the Group A elements have 8 valence electrons.
D.
atoms lose, gain, or share valence electrons to have 8 valence electrons.
E.
the noble gases react with other compounds to get 8 valence electrons.
Question #2
The ion of aluminum is
A.
Al2-.
B.
Al3+.
C.
Al3-.
D.
Al2+.
E.
Al+.
Question #3
An ionic compound
A.
has a net positive charge.
B.
contains only cations.
C.
contains only anions.
D.
has a net negative charge.
E.
has a net charge of zero.
Question #4
The correct formula for a compound formed from the elements Al and O is
A.
AlO.
B.
Al3O2.
C.
AlO3.
D.
Al2O3.
E.
Al2O.
Question #5
Which one of the following compounds contains an ion with a 3+ charge?
A.
KCl
B.
CuCl
C.
MgCl2
D.
Na2O
E.
FeCl3
Question #6
The compound MgCl2 is named
A.
magnesium chlorine.
B.
magnesium chloride.
C.
magnesium dichloride.
D.
dimagnesium chloride.
E.
magnesium (II) chloride.
Question #7
Which one of the following elements forms two or more ions with different ionic charges?
A.
Ca
B.
K
C.
Fe
D.
F
E.
O
Question #8
What is the correct formula for the iron (II) ion?
A.
Fe2-
B.
Fe3+
C.
Fe2+
D.
Fe3-
E.
Fe+
Question #9
In ionic compounds, ________ lose their valence electrons to form positively charged ________.
A.
nonmetals, anions
B.
metals, anions
C.
metals, polyatomic ions
D.
nonmetals, cations
E.
metals, cations
Question #10
What is the correct formula for iron (III) sulfide?
A.
Fe2S
B.
Fe2S3
C.
FeS2
D.
Fe2S2
E.
FeS
Question #11
A(n) ________ is the smallest neutral unit of two or more atoms held together by a covalent bond.
A.
unit
B.
nucleus
C.
ionic compound
D.
molecule
E.
formula
Question #12
In a molecule with covalent bonding,
A.
atoms of different metals form bonds.
B.
atoms of noble gases are held together by attractions between oppositely charged ions.
C.
atoms of metals form bonds to atoms of nonmetals.
D.
oppositely charged ions are held together by strong electrical attractions.
E.
atoms are held together by sharing electrons.
Question #13
Which of the following elements does not exist as a diatomic molecule?
A.
hydrogen
B.
oxygen
C.
chlorine
D.
carbon
E.
nitrogen
Question #14
In a covalently bonded molecule, the number of electrons that an atom shares with others is usually equal to the number of electrons
A.
needed to give it a noble gas arrangement.
B.
in its nucleus.
C.
in its ion.
D.
in all the atoms.
E.
in the atom.
Question #15
Double and triple bonds form because
A.
there is at least one hydrogen atom involved in the bond.
B.
one of the atoms in the molecule has more than 8 valence electrons.
C.
the ions involved have charges larger than one.
D.
the atoms involved have high electronegativities.
E.
single covalent bonds do not give all of the atoms in the molecule eight valence electrons.
Question #16
The correct name of the compound NCl3 is
A.
nitrogen(III) chloride.
B.
nitrogen trichloride.
C.
nickel chloride.
D.
trinitrogen chloride
E.
nitrogen chloride.
Question #17
According to naming rules, the types of compound that use prefixes in their names are
A.
covalent compounds.
B.
ionic compounds involving transition metals.
C.
ionic compounds.
D.
compounds that contain polyatomic ions.
E.
polyatomic ions.
Question #18
How many electrons will aluminum gain or lose when it forms an ion?
A.
lose 2
B.
gain 5
C.
lose 3
D.
lose 1
E.
gain 1
Question #19
What is the formula of carbon tetraiodide?
A.
C4I
B.
CI3
C.
CI4
D.
C2I4
E.
CI
Question #20
The name of Al2(SO4)3 is
A.
dialuminum trisulfide.
B.
aluminum(III) sulfate.
C.
dialuminum sulfate.
D.
aluminum sulfate.
E.
dialuminum trisulfate.
Question #21
The ability of an atom to attract the shared electrons in a covalent bond is its
A.
bonding ability.
B.
nonpolarity.
C.
ionic character.
D.
polarity.
E.
electronegativity.
Question #22
Which of the following compounds contains a polar covalent bond?
A.
HCl
B.
NaF
C.
MgO
D.
Br2
E.
O2
Question #23
Ionic bonding is expected in which of these compounds?
A.
KF
B.
OF2
C.
Cl2
D.
H2
E.
HF
Question #24
A polar covalent bond is found in which of these compounds?
A.
N2
B.
H2O
C.
NaCl
D.
F2
E.
H2
Question #25
A group of covalently bonded atoms that has an overall electrical charge is called a(n)
A.
ionic compound.
B.
molecule.
C.
cation.
D.
anion.
E.
polyatomic ion.
Question #26
What is the symbol for the ion with 19 protons and 18 electrons?
A.
K-
B.
Ar+
C.
F+
D.
F-
E.
K+
Question #27
Which of the following polyatomic ions has a positive charge?
A.
hydroxide
B.
nitrate
C.
hydrogen carbonate
D.
ammonium
E.
cyanide
Question #28
Which of the following polyatomic ions has a 3- ionic charge?
A.
nitrate
B.
hydroxide
C.
phosphate
D.
sulfate
E.
hydrogen carbonate
Question #29
What is the formula of the nitride ion?
A.
NO32-
B.
NO33-
C.
NO2-
D.
N3-
E.
NO3-
Question #30
The name of the HSO4- ion is
A.
hydrogen sulfite.
B.
sulfite.
C.
hydrogen sulfate.
D.
sulfide.
E.
sulfate.
Question #31
What is the formula of a compound that contains Na+ and PO43- ions?
A.
Na3PO4
B.
Na3PO3
C.
Na3P
D.
Na2PO3
E.
NaPO4
Question #32
Fe2(SO4)3 is called
A.
iron (III) sulfate.
B.
iron (II) sulfate.
C.
diiron trisulfate.
D.
iron sulfate.
E.
iron trisulfate.
Question #33
What is the formula for aluminum nitrate?
A.
Al(NO3)3
B.
Al2NO2
C.
Al(NO2)3
D.
Al2(NO2)2
E.
AlNO3
Question #34
When a cation is formed from a representative element
A.
electrons are lost and the ion is larger.
B.
electrons are lost and the ion is smaller
C.
electrons are gained and the ion is larger.
D.
the cation acquires a negative charge.
E.
electrons are gained and the ion is smaller.
Question #35
To form an ion, a sodium atom
A.
gains one electron.
B.
loses two electrons.
C.
gains two electrons.
D.
loses one electron.
E.
loses seven electrons.
Question #36
The carbon tetrachloride molecule, CCl4, is
A.
a polar molecule with nonpolar bonds.
B.
a nonpolar molecule with nonpolar bonds.
C.
a polar molecule with ionic bonds.
D.
a nonpolar molecule with polar bonds.
E.
a polar molecule with polar bonds.
Question #37
An anion always
A.
contains a metal and a nonmetal.
B.
has a positive charge.
C.
contains a group of two or more atoms with a positive charge.
D.
forms covalent bonds.
E.
has a negative charge.
Question #38
What is the ionic charge of an ion with 18 protons and 15 electrons?
A.
2-
B.
2+
C.
3+
D.
3-
E.
1+
Question #39
Elements in group 2A(2) of the periodic table form ions with a charge of
A.
3+.
B.
1-.
C.
0
D.
1+.
E.
2+.
Need help with your exam preparation?
Get Answers to this exam for $6 USD.
Get Answers to all exams in [ Chem 051 - Fundamentals of Chemistry ] course for $25 USD.
Existing Quiz Clients Login here