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