AP Chem Ch 21 and 22 Practice Quiz (Nuclear and Organic Chemistry)
1. In the following nuclear equation, identify the missing product:
43
1
20Ca + α  _____ + 1H
a) 46 22Ti
b) 46 21Sc
c) 44 22Ti
d) 42 18Ar
2. An unstable isotope of rhenium, 191Re, has a half-life of 9.8 minutes and is a beta producer. What is the
other product of the reaction?
a) 191Os
b) 191W
c) 192Pt
d) 190W
e) 190Os
3. The nuclide 232 90Th is radioactive. When one of these atoms decays, a series of α and β - particle
emissions occurs, taking the atom through may transformations to end up as an atom of 20882Pb how many
α particles are emitted in converting 232 90Th into 20882Pb?
a) 6
b) 8
c) 2
d) 214
e) 4
4. In the following fission reaction, identify the other product:
235
1
139
1
92U + 0n 
53I + 2 0n+ ______
a) 8939Y
b) 9539Y
c) 9542Mo
d) 9442Mo
e) 9440Zr
5. Electron capture transforms 4019K into what nuclide?
a) 4020Ca
b) 4018Ar
c) 42He
d) 4019Ke) 3920Ca
6. Which of the following processes increase the atomic number by 1?
a) gamma-ray production
b) electron capture
c) beta-particle production
d) positron production
e) alpha-particle production
7. The rate constant for the beta decay of thorium-234 is 2.88 x 10-2/day. What is the half-life of this
nuclide?
a) 53.1 days
b) 1.22 days
c) 0.693 days
d) 24.1 days
e) 101 days
8. Which of the following balanced equations is labeled incorrectly?
a) fission: 20983Bi + 42He  21185At + 210n
b) fusion: 21H + 21H  31H + 11H
c) bombardment: 23994Pu + 10n 24095Am 0-1e
d) beta production: 23992U  23993Np + 0-1e
e) all are correctly labeled
9. The nuclide 127N is unstable. What type o f radioactive decay would be expected?
a) βb) β+
c) σ
d) α
e) 10n
10. The number of a certain radioactive nuclide present in a sample decays from 1.00 x 10 3 to 2.50 x 102 in
ten minutes. What is the half-life of this radioactive species?
a) 10 minutes
b) 5 minutes
c) 20 minutes
d) 2.5 minutes
3) not enough information given
11. The half-life of 90Sr is 28 years. How long will it take for a given sample of 90Sr to be 90.%
decomposed?
a) 9 half-lives
b) 4.3 years
c) 93 years
d) 5.7 x 10-3 years
e) none of these
12. If a tree dies and the trunk remains undisturbed for 13,750 years, what percentage of original 14C is still
present? (half-life of 14C is 5730 years)
a) 5.20%
b) 19.0%
c) 2.20%
d) 45.0%
13. Calculate the change in energy in kJ/mol for the transmutation of radium from the given molar masses:
226
4
222

+
88Ra
2He
86Rn
g/mol 226.0254
4.0026
222.0176
a) -5.2 kJ/mol
b) -1.6 kJ/mol
c) -4.7 x 1014 kJ/mol
d) -4.7 x 108 kJ/mol
e) +1.6 x 108 kJ/mol
14. Name the following compound.
15. What is the name of this compound? How many isomers does it have?
16. Name the functional group in this compound.
17. What is the name of this compound?
18. Name the functional group in this compound.
19. What is the name of this compound?
20. What is the name of this compound?
21. What is the name of this compound?
22. Name the functional groups in this compound.
23. Name the functional group in this compound.
24. What functional group is present in the following molecule?
.
25. Is the following molecule an example of cis or trans isomerism?
26. Is the following molecule a chiral molecule?
27. Optical isomers
a) have superimposable mirror images
b) have non-superimposable mirror images
c) are said to be chiral
d) a and c
e) b and c
28. A student gave a molecule the following name:
3-methyl-4-isopropylpentane
However, the teacher pointed out that, although the molecule could be correctly drawn from this name,
the name violates the IUPAC rules. What is the correct (IUPAC) name of the molecule?
a) 4-isoproply-3-methylpentane
b) 2-isopropyl-3-methylpentane
c) 1,1,2,3-tetramethylpentane
d) 2,3,4-trimethylhexane
e) 3,4-dimethylheptane
29. Which of the following pairs is incorrect?
a) ethane – C2H6
b) hexane – C6H14
c) decane – C10H22
d) heptane – C7H16
e) nonane – C9H18
30. Which of the following pairs is incorrect?
a) –CH3 – methyl
b) –CH2CH2CH3 – isopropyl
c) –CH2CH3 – ethyl
d) –CH2CH2CH3 – propyl
e) –CH2CH2CH2CH3 – butyl
31. Substances with the same molecular formula but with different structures are known as:
a) polymers
b) esters
c) isomers
d) isotopes
32. Which of the following types of compounds lacks and sp 2-hybridized carbon center?
a) aldehydes
b) ketones
c) alcohols
d) alkenes
e) benzene
33. Consider the molecule trans-2-butene. Which statement is true?
a) The molecule has two π bonds
b) There is free rotation around every bond in the molecule.
c) Cis-2-butene is its structural isomer
d) Carbon #2 exhibits sp2 hybridization
e) none of the above
Answers
1. (b)
2. (a)
3. (a)
4. (b)
5. (b)
6. (c)
7. (d)
8. (a)
9. (b)
10. (b)
11. (c)
12. (b)
13. (d)
14. 3-ethylpentane
15. butane; two
16. carboxylic acid
17. 1-ethyl-2-methylcyclohexane
18. ester
19. 3-ethyl-4,5-dipropyloctane
20. 4,6-diethyl-5,5-dipropyl-4,6,7-trimethydecane
21. 4-ethyl-3,5-dimethylheptane
22. carboxylic acid and amine
23. ether
24. ketone
25. trans
26. yes, 4 different groups attached to the carbon
27. (e)
28. (d)
29. (e)
30. (b)
31. (c)
32. (c)
33. (d)