8519 - 1 - Page 1
Name: ____________________________________________
1)
Radioactive cobalt-60 is used in radiation therapy treatment.
Cobalt-60 undergoes beta decay. This type of nuclear
reaction is called
A)
B)
C)
D)
2)
7)
Approximately what fraction of an original Co-60 sample
remains after 21 years?
B)
A)
nuclear fusion
artificial transmutation
nuclear fission
natural transmutation
4)
increases as it loses electrons
decreases as it loses electrons
increases as it gains electrons
decreases as it gains electrons
5)
D)
C) neutron
D) alpha
Which of the following types of radiation has the greatest
penetrating power?
A) gamma
B) alpha
6)
C)
Which of the following particles has the greatest mass?
A) beta
B) positron
When a neutral atom undergoes oxidation, the atom's
oxidation state
A)
B)
C)
D)
3)
C) beta
D) positron
Which formula represents a molecule of a saturated
hydrocarbon?
A) C6 H6
C) C4 H10
B) C5 H8
D) C2 H2
Given the structural formulas for two organic compounds:
The differences in their physical and chemical properties are primarily due to their different
A) number of carbon atoms
B) number of hydrogen atoms
8)
9)
Which equation shows conservation of charge?
A) Fe + 2e- ‚ Fe3+
C) Fe ‚ Fe2+ + 2e-
B) Fe ‚ Fe2+ + e-
D) Fe + 2e- ‚ Fe2+
Molecules of 2-methyl butane and 2,2-dimethyl propane
have different
A)
B)
C)
D)
10)
C) molecular masses
D) functional groups
numbers of carbon atoms
molecular formulas
structural formulas
numbers of covalent bonds
A voltaic cell spontaneously converts
A)
B)
C)
D)
chemical energy to electrical energy
electrical energy to chemical energy
nuclear energy to electrical energy
electrical energy to nuclear energy
11)
Given the incomplete equation representing an organic
addition reaction:
X(g) + Cl2 (g) ‚ XCl2 (g)
Which compound could be represented by X?
A) C3 H8
C) C4 H10
B) C2 H4
D) CH4
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12)
Given the incomplete reaction:
16)
Which structural formula represents a molecule that is not
an isomer of pentane?
A)
Which compound is represented by X?
13)
14)
A)
C)
B)
D)
A) 16 N
C) 32 P
B) 14 C
D) 37 K
The amount of energy released from a fission reaction is
much greater than the energy released from a chemical
reaction because in a fission reaction
A)
B)
C)
D)
15)
B)
Which isotope is most commonly used in the radioactive
dating of the remains of organic materials?
C)
energy is converted into mass
ionic bonds are broken
mass is converted into energy
covalent bonds are broken
The diagram below shows a key being plated with copper in
an electrolytic cell.
D)
17)
Which formula represents an unsaturated hydrocarbon?
A)
C)
B)
D)
Given the reduction reaction for this cell:
Cu 2+(aq) + 2e- ‚ Cu(s)
This reduction occurs at
A)
B)
C)
D)
B, which is
A, which is
B, which is
A, which is
the anode
the anode
the cathode
the cathode
18)
What is the IUPAC name of the compound having the
following structural formula?
A) 2-pentene
B) 3-pentyne
C) 2-pentyne
D) 3-pentene
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19)
Which structural formula represents 2-pentyne?
22)
Given the formula:
A)
This compound is classified as
A) an amine
B) a ketone
23)
C) an aldehyde
D) an amide
Given the structural formula:
B)
C)
This structural formula represents a molecule of
A) a ketone
B) an aldehyde
24)
D)
Given the balanced equation with an unknown compound
represented by X:
C16 H12 O6 (aq)
20)
21)
A) CH3 OH(aq)
B) CH2 OHCH2 OH(aq)
C) butanol
D) propanal
C) CH3 CH2 OH(aq)
D) CH2 (OH)4 (aq)
Which structural formula represents an ether?
25)
A)
The process of joining many small molecules into larger
molecules is called
A) saponification
B) substitution
26)
B)
C) neutralization
D) polymerization
What is the oxidation number of chromium in K2 Cr2 O7 ?
A) +6
B) +12
27)
C)
2X + 2CO2 (g)
Which compound is represented by X?
What is the IUPAC name for the compound that has the
condensed structural formula CH3 CH2 CH2 CHO?
A) butanal
B) propanol
C) an ester
D) an amino acid
C) +2
D) +7
Given the reaction:
Mg(s) + 2H+(aq) + 2Cl-(aq) ‚
Mg 2+(aq) + 2Cl-(aq) + H2 (g)
Which species undergoes oxidation?
D)
A) H2 (g)
C) H+(aq)
B) Mg(s)
D) Cl-(aq)
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28)
34)
Given the reaction:
2Al(s) + Fe2 O3 (s)
Mg + CuSO4 ‚ MgSO4 + Cu
Al2 O3 (s) + 2Fe(s)
Which equation represents the oxidation that takes place?
Which species undergoes reduction?
29)
A) Fe
C) Al
B) Al3+
D) Fe3+
Which change in oxidation number indicates oxidation?
A) -1 to -2
B) +2 to -3
30)
electrical energy, spontaneously
nuclear energy, spontaneously
nuclear energy, nonspontaneously
electrical energy, nonspontaneously
C) Mg 2+ + 2e- ‚ Mg
B) Cu ‚ Cu 2+ + 2e-
D) Cu 2+ + 2e- ‚ Cu
Which type of organic compound is represented by the
structural formula shown below?
A) ether
B) alcohol
36)
the gain of electrons
the loss of electrons
the gain of protons
the loss of protons
What is the purpose of the salt bridge in a voltaic cell?
A)
B)
C)
D)
33)
C) -1 to +2
D) +3 to +2
Which process occurs at the anode in an electrochemical
cell?
A)
B)
C)
D)
32)
35)
A) Mg ‚ Mg 2+ + 2e-
In a voltaic cell, chemical energy is converted to
A)
B)
C)
D)
31)
Given the reaction:
It is a path for the flow of positive and negative ions.
It is a path for the flow of electrons.
It blocks the flow of electrons.
It blocks the flow of positive and negative ions.
A diagram of a chemical cell and an equation are shown
below.
When the switch is closed, electrons will flow from
A) the Pb 2+(aq) to the Pb(s)
B) the Pb(s) to the Cu(s)
C) the Cu 2+(aq) to the Cu(s)
D) the Cu(s) to the Pb(s)
According to the Activity Series chemistry reference table,
which of these metals will react most readily with 1.0 M HCl
to produce H2 (g)?
A) Ca
B) Mg
37)
C) ester
D) aldehyde
C) K
D) Zn
In which compound does chlorine have the highest
oxidation number?
A) NaClO
C) NaClO3
B) NaClO4
D) NaClO2
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38)
Based on the Selected Radioisotopes chemistry reference
table, what is the fraction of a sample of potassium-42 that
will remain unchanged after 62.0 hours?
39)
(a) State one possible advantage of using nuclear power
instead of burning fossil fuels.
40)
Given the nuclear equation:
What nuclear particle is represented by X?
(b) State one possible risk of using nuclear power.
(c) If animals feed on plants that have taken up Sr-90, the
Sr-90 can find its way into their bone structure. Explain
one danger to the animals.
Questions 41 through 44 refer to the following:
The graphic below shows the numbers of neutrons and protons for specific nuclides of C, N, Ne, and S.
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41)
Using the point plotted on the given graph for neon, complete the table below.
42)
Explain, in terms of atomic particles, why the S-32 nuclide shown in the graph is stable.
43)
Using the point plotted on the graph for nitrogen, what is the neutron-to-proton ratio of this nuclide?
44)
Based on the Selected Radioisotopes chemistry reference table, complete the decay equation for N-16.
‚ _______________ + _______________
45)
Given the reaction: 4Al(s) + 3O2 (g) ‚ 2Al2 O3 (s)
(a) Write the balanced oxidation half-reaction for this
oxidation-reduction reaction.
47)
Given the ester: ethyl butanoate
(a) In the box below, draw the structural formula for this
ester.
(b) What is the oxidation number of oxygen in Al2 O3 ?
46)
Given the balanced equation for an organic reaction
between butane and chlorine that takes place at 300.DC and
101.3 kilopascals:
C4 H10 + Cl2 ‚ C4 H9 Cl + HCl
Identify the type of organic reaction shown.
(b) Determine the gram formula mass of this ester.
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48)
Given the structural formula for butane:
Questions 49 through 51 refer to the following:
The diagram below represents a voltaic cell and a balanced ionic
equation.
In the box below, draw the structural formula of an isomer of
butane.
49)
What is the total number of moles of electrons needed to
completely reduce 6.0 moles of Ni2+(aq) ions in the ionic
equation shown?
50)
Identify one metal from the Activity Series chemistry
reference table that is more easily oxidized than Mg(s).
51)
Explain the function of the salt bridge in the voltaic cell
shown.