4U Chemistry Final Exam Review Questions 2013
Multiple choice
Compared to the charge and mass of a proton, an electron has...
A. the same charge and a smaller mass
B. the same charge and the same mass
C. an opposite charge and a smaller mass
D. an opposite charge and the same mass
A proton has approximately the same mass as
A. a neutron
B. an alpha particle
C. a beta particle
D. an electron
Which symbols represent atoms that are isotopes?
A. C-14 and N-14
B. O-16 and O-18
C. I-131 and I-131
D. Rn-222 and Ra-222
What is the mass number of an atom which contains 28 protons, 28 electrons, and 34 neutrons?
A. 28
B. 56
C. 62
D. 90
The probability area that best represents the shape of an atomic 3p orbital is...
Which of the following is the correct electron-dot formula for carbon dioxide?
Which of the following represents the correct formula for aluminum oxide?
A. AlO
B. Al2O3
C. AlO2
D. Al2O
The compound above is classified as a(n)
a. alkane
b. carboxylic acid
c. aldehyde
d. ketone
e. alkene
Which of the following is a secondary alcohol?
a.
d. CH3OH
b.
e. CH3CH2OH
c.
What is the correct name for the above compound?
a. 2-methyl-3-butanol
d. 3-methyl-2-butanol
b. 2-pentanol
e. none of these
c. isobutanol
What results when a secondary alcohol is oxidized?
a. a ketone
d. an acid
b. an amine
e. no reaction
c. an aldehyde
The general formula for a cycloalkane can be represented by which of the following?
a. CnHn
c. CnH2n
b. CnH2n+2
d. CnH2n-2
In which of the following compounds does ionic bonding predominate?
A. NH4Cl
B. CO2
C. CH4
D. LiBr
Which of the following molecules contains only one non-bonding pair of valence electrons?
A. NH4+
B. HCN
C. C2H4
D. N2
How many PopTarts® are needed to convert 1,000.0 g of water at 20.0 C to steam at 100.0 oC? One
PopTart is equal to 800,000 J of energy...wow!
A. 0.419 PopTart
B. 2.83 PopTarts
C. 3.25 PopTarts
D. None of the above
A 1.00 g sample of NH4NO3 is decomposed in a bomb calorimeter. The temperature of the calorimeter
increases by 6.12 K. The heat capacity of the system is 1.23 kJ/g·deg. What is the molar heat of
decomposition for ammonium nitrate?
A. -7.53 kJ/mole
B. -16.1 kJ/mole
C. -398 kJ/mole
D. -602 kJ/mole
Given the following data at 1 atm of pressure and 25.0 oC...
∆H of formation = +64.4 kJ/mole for Cu2+
∆H of formation = -152.4 kJ/mole for Zn2+
∆H of formation = 0 for both Zn and Cu because these are in the most stable state.
Calculate the standard heat of reaction for...
A.
B.
C.
D.
-217 kJ/mole
+217 kJ/mole
-88.0 kJ/mole
+88.0 kJ/mole
Which of the following compounds contains 10 carbon atoms?
a. 2,2,3-trimethylheptane
c. 2-methyldecane
b. octane
d. 2,3-dimethylheptane
What is the total number of sigma bonds found in the following compound?
A.
B.
C.
D.
8
10
11
15
What is the molar enthalpy of reaction for the combustion of methane? The balanced chemical
equation and the bond energies for the various bonds in the reactants and products are...
A.
B.
C.
D.
+80 kJ/mole
-284 kJ/mole
+668 kJ/mole
-668 kJ/mole
The following reaction coordinate diagram represents...
A.
B.
C.
D.
an endothermic reaction.
an exothermic reaction.
a reaction that is neither endothermic nor exothermic.
a reaction in which a catalyst is used.
What is the total number of pi bonds found in the following compound?
A.
B.
C.
D.
1
2
3
4
An amine is characterized by what functional group?
a. -CO2CH3
d. -CHO
b. -NH2
e. -OH
c. -CO2H
Which of the following is an alcohol?
a. NaOH
d.
b.
e.
c.
When two alcohols undergo a condensation reaction, what is formed?
a. liquid alcohol
d. an aldehyde
b. a ketone
e. an ether
c. an ester
The correct name for the compound given above is which of the following?
a. 2-methyl-1-butene
d. 3-methyl-2-butene
b. pentene
e. 2-ethyl-1-pentene
c. 2-ethyl-1-propene
What is the correct name for the above compound?
a. 2,3-dimethylbutane
d. 2,2-dimethylbutane
b. hexane
e. isohexane
c. 2-methylpentane
What is the hybridization of the oxygen atom in water?
A.
B.
C.
D.
sp
sp2
sp3
It is not hybridized.
Which of the following best represents the 3-dimensional view of NH2-?
Which ion would NOT have the same electron configuration as the noble element Neon?
A. K 1+
B. F 1C. O 2D. Mg 2+
E. None of the above
Which sublevel, when full, corresponds to the first row of transition metals
A. 3d
B. 3f
C. 4d
D. 4f
E. 4p
Which number sequence represents the most likely arrangement of electrons for an element in a
stable compound?
A. 2 - 8 - 6
B. 3 - 5 - 7
C. 2 - 8 - 7
D. 2 - 8 - 8
A triple bond contains what types of bonds
A. 1 pi and 2 sigma
B. 3 sigma
C. 3 pi
D. 2 pi and 1 sigma
E. none of the above
Who said we could not know the speed and location of an electron at the same time?
A. Schrodinger
B. Bohr
C. Heisenberg
D. Hund
E. None of the above
A pure substance has a high melting point and conducts electricity when dissolved in water, it is most
likely a
A. Network solid
B. Ionic solid
C. Molecular solid
D. Metallic solid
E. None of the above
According to valence bond theory, what is required for two atoms to bond?
A. Both atoms need a half filled orbital
B. Both atoms need an empty orbital
C. Both atoms need a full orbital
D. Both atoms need hybridized orbitals
E. None of the above
Which of the following molecules has both ionic and covalent bonds in it?
A. NH4NO3
B. CH3OCH3
C. CaFBr
D. LiF
E. All of the above
The initial rate of production of Br2 gas in the following reaction is 0.0750mol/L*s. What is the rate of
loss of HBr gas
4HBr + O2  2Br2 2H2O
A. 0.0188mol/L*s
B. 0.0375 mol/L*s
C. 0.0750 mol/L*s
D. 0.150 mol/L*s
E. 0.300 mol/L*s
The correct name for compound above is which of the following?
a. chloropropylbenzene
c. 1-chloro-3-phenyl-3-propene
b. 3-phenyl-1-choloropropyne
d. 3-chloro-1-phenyl-1-propene
The correct name for the compound given above is which of the following?
a. 1,3-cyclopentadiene
c. 1,4-cyclopentene
b. 1,4-cyclopentadiene
d. 1,3-cyclopentene
The correct name for the compound given above is which of the following?
a. 2-cycloproproxylcyclobutane
c. 2-cyclobutoxycyclopropane
b. cyclobutylpropoxy ether
d. cyclopropoxycyclobutane
Of the five names listed below, four contain deliberate errors. Which is the only name is correct?
a. 2-pentanal
d. 1,2-dimethylpropanoate
b. 2,3-dichloropentane
e. n-methylpropanamide
c. 3-methylpropanoic acid
The reaction of CH3CH=CH-CH=CH2 with excess bromine gives chiefly
a. 1,2-dibromo-3-pentene
b. 3,4-dibromo-1-pentene
c. 1,4-dibromo-2-pentene
d. a mixture of the above three compounds
e. none of the above three compounds
The number of isomers of chlorobromobenzene is which of the following?
a. three
d. six
b. four
e. seven
c. five
Given the following mechanism, what is the equation for the overall reaction
2A+ B  2C ( slow)
B+C  D+E ( fast )
C+D  E+F (fast)
A.
B.
C.
D.
2A  2E + F
2A + 2B  2E + F
2A + B + 2C + D  2C + D + 2E + F
2A+ B  2E + F
Which best explain why noble elements are unreactive?
A. Their first energy level has 2 electrons
B. Their outermost energy level has 8 electrons
C. Their second energy level has 8 electrons
D. Their first energy level has 8 electrons
What is the valence of a Selenium atom (group 16)?
A. 2
B. 4
C. 6
D. 8
The rate of a reaction depends upon:
A. the concentration of the reactants.
B. the temperature of the reaction.
C. whether or not a catalyst is used.
D. the nature of the reactants.
E. All of the above are correct.
Which of the following statement(s) about a reaction mechanism is/are true?
I. The mechanism is the series of steps needed to complete a reaction.
II. The rate of a reaction is only as fast as the slowest step in the
mechanism.
III. You can usually deduce the reaction mechanism from its reactants
and products.
A.
B.
C.
D.
E.
I only
II only
III only
I and II only
I, II, and III
What kind of chemical system can have energy entering and leaving, but not matter
A.
B.
C.
D.
E.
Open system
Closed system
Isolated system
All of the above
None of the above
If Substance A has a lower specific heat capacity than substance B and they are both left in the sun for
the same amount of time..
A.
B.
C.
D.
E.
Substance A will heat up faster
Substance B will heat up faster
They will heat up at the same rate
They will both maintain their current temperature
None of the above
In the above diagram which is the highest temperature?
A. T1 = T2
B. T1 < T2
C. T1 > T2
D. It is impossible to tell.
Which of the curves has the greatest number of collisions possessing the activation energy?
A. T1 has the greatest number of collisions possessing the activation energy
B. T2 has the greatest number of collisions possessing the activation energy
C. Both have an equal number of collisions possessing the activation energy.
D. It is impossible to tell.
If a catalyst were used, how would the distributions change?
A. Both curves would shift to the right.
B. Both curves would shift to the left.
C. The activation energy would shift to the right.
D. The activation energy would shift to the left.
E. Nothing about the distributions would change.
Which of the following describes the total quantity of kinetic and potential energy in a substance
A.
B.
C.
D.
E.
Heat
Temperature
Thermal energy
Energy
None of the above
Calculating the change in reactant concentration over a time of 5 seconds will tell you
A.
B.
C.
D.
E.
Instantaneous reaction rate
Average reaction rate
Stoichiometric rate relation
Reaction Progress
None of the above
To which family of organic compounds does CH3CHOCH2CH2CH3 belong
a. alcohol
b. aldehyde
c. alkyne
d. ketone
e. carboxylic acid
Which class of organic compound does not contain a C=O group
a. amides
b. ethers
c. ketones
d. esters
e. carboxylic acids
The formula for methyl ethanoate is which of the following?
a.
c.
b.
d.
The correct IUPAC name for above compound is which of the following?
a. fluorobutanoic acid
c. 2-fluoro-2-nitrobutanoic acid
b. 3-fluoro-3-nitrobutanoic acid
d. 3-fluoro-2-nitropropanoic acid
Which two compounds combine to form an ester
a.
b.
c.
d.
e.
carboxylic acid and alcohol
aldehyde and alcohol
alcohol and a ketone
carboxylic acid and ketone
aldehyde and a carboxylic acid
Use your knowledge of collision theory and the potential energy diagram shown at right to answer the
next 4 questions. Assume the energy values are in Kilojoules.
Which letter shows the potential energy of the activated complex?
A
D
B
E
C
What is the H of the reaction?
A. + 35 KJ
B. - 35 KJ
E. None of these are correct.
C. + 25 KJ
D. - 10 KJ
Which letter shows the activation energy?
A
B
C
D
E
How would the graph change if the temperature were raised?
A. A and D would have higher energies.
B. C would be greater.
C. The activation energy would decrease.
D. More than one of the above are correct.
E. No change in the graph would occur.
How would the graph change if a catalyst were used.
A. A and D would have higher energies.
B. C would be greater.
C. The activation energy would decrease.
D. More than one of the above are correct.
E. No change in the graph would occur.
Which of the following is the correct name for the structure below?
a. trans-4-nonyne
b. cis-5-nonene
c. trans-4-nonene
d. cis-4-nonene
The primary product of the following reaction is which of the following?
a.
c.
b.
d.
The correct synthesis of octane would involve which of the following reactions?
a. dehydrogenation of 2-octene
c. hydrogenation of 3-octene
b. halogenation of 4-octene
d. reduction of isooctane
The synthesis sequence shown here is best described as which of the following?
1.
a.
b.
c.
d.
e.
2.
3.
(1) Dehydration; (2) halogenation; (3) hydrogenation
(1) Hydrogenation; (2) dehydration; (3) halogenation
(1) Hydrogenation; (2) halogenation; (3) dehydration
(1) Halogenation; (2) hydrogenation; (3) dehydration
(1) Dehydration; (2) hydrogenation; (3) halogenation
The melting point of a compound is not influenced by which of the following?
a. polarity
d. hydrogen bonds
b. electronegativity of its atoms
e. isotope of carbon
c. Van der Waals forces
How many actual double bonds does the benzene ring possess?
a. 4
d. 1
b. 3
e. 0
c. 2
An amine is characterized by what functional group?
a. -CO2CH3
d. -CHO
b. -NH2
e. -OH
c. -CO2H
The chemical bond between glycerin and a fatty acid is which of the following?
a. an ester bond
d. an ether bond
b. a double bond
e. a hydrogen bond
c. a peptide bond
Ethanoic acid (vinegar) when diluted to low concentrations by water can be prepared from ethene by
a. reduction with H2, followed by reaction with a strong oxidizer
b. addition of HCl, followed by reaction with H2O
c. addition of H2O followed by reaction with a strong oxidizer
d. addition of Br2, followed by reduction with H2
The product formed by the reaction of CH3CO2H with
is properly named
a. N-ethyl-N-methylethanamide
b. N,N-diethylaminomethane
c. N,N-diethylmethanamide
d. N-ethyl-N-methylmethamide
Short answer / Calculations
Fill in the following chart with simple examples
Explain the steps in synthesizing an amide.
Explain the type of organic molecule that uses substitution reactions and give an example using the
production of an organic halide
List the 4 quantum numbers and what they represent
Name the element that would fill the following energy level diagram and explain who came up with the
rule for determining the filling pattern
Draw the energy level diagram for titanium and explain why it can have multiple positive charges
Explain the periodic table is set up by referring to the Quantum orbitals s,p,d,f
Write a reaction that represents the addition of H2O with Li.
Draw the Lewis structures for the following and state molecular geometry
Identify each as alkene, alkyne, or alkane, Draw their structural formula and give their IUPAC names.
1) C4H8
2) C2H2
3) C3H8
Fill in the hybridization that is occurring at each indicated element
Write the name of each of the following organic compounds:
Explain how you can predict if a molecule will be polar
What are the different types of intra and intermolecular forces
Explain what the system and the surroundings are
What is a molar enthalpy and give an example
Draw the structures for the following organic molecules:
a) methylcyclopentane
b) 2-ethyl-2-pentene
c) N-Ethyl ethanamine
Try one of these Hess’s law questions…or both
Represent the following equation in 3 other ways
Look at the image below:
a) How many elementary steps are there in this reaction
b) Which is the rate determining step
c) How many intermediate products are there? What happens to them?
How does electronegativity affect how bonds tend to “act” with regards to polarity
Describe the difference between Ferromagnetism and Paramagnetism
How is diamond different from graphite? Explain it in terms of hybridization
How is heat different than temperature?
What two things are needed for an effective collision to occur which will allow a chemical reaction to
occur?
We use the phrase the rich get richer to help us remember Vladimir Markovikov's rule regarding
addition reactions, state this rule in terms of a chemical reaction.