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Test your basic knowledge |
MCAT Organic Chemistry
Start Test
Study First
Subjects
:
mcat
,
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
disproportionation
geometric isomers
polymerization
aldehyde
2. Lowest priority group projects into the page
optical activity
nucleophile
hot - acidic potassium permanganate
fischer projection
3. Steps of free radical substitution
chiral
vicinal
allyl
initiation propagation termination
4. Object that is not superimposable upon mirror image
sp3
isomer
chiral
Vinyl
5. A sigma bond and two pi bonds
molecular orbital
ionic bond
eclipsed conformation
triple bond
6. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
electrophilic addition of free radicals
racemic mixture
aprotic solvent
Alkene
7. How many stereoisomers can a molecule have with n chiral centers
saturated hydrocarbon
achiral
not ignored
2^n
8. A = observed rotation / concentration * length
specific rotation
primary carbon
acetaldehyde
ring flip
9. Name for ethanal
vicinal
initiation propagation termination
relative configuration
acetaldehyde
10. What are the best leaving groups?
anti conformation
weak bases
enantiomer
hydroboration
11. Arise from angle strain - torsional strian and nonbonded strain
ring strain
stereoisomers
pyrolysis
hot - acidic potassium permanganate
12. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
electrophilic addition of X2
not ignored
ring strain
cold potassium permanganate
13. Highest energy no separation. or 120 separation.
geminal
Alkyne
eclipsed conformation
electrophilic addition of H2O
14. Kmno4
potassium permanganate
structural isomers
acetaldehyde
anti conformation
15. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
Alkane nomenclature
pi bond
2^n
Alkane
16. M - chloroperoxybenzoic acid
mcpba
C3H8 + 5O2 = 3CO2 + 4H2O + heat
Vinyl
angle strain
17. Not solvated
Vinyl
enantiomer
aprotic solvent
basicity
18. When bond angles deviate from ideal values
gauche conformation
quantum numbers
angle strain
Alkene
19. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
initiation propagation termination
peroxycarboxylic acid
acetaldehyde
saturated hydrocarbon
20. Diols with hydroxyl group on adjacent carbon
markovnikov's rule
ring strain
alcohol
vicinal
21. N - l - ml - ms
halogen
C3H8 + 5O2 = 3CO2 + 4H2O + heat
allyl
quantum numbers
22. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
amines
relative configuration
disproportionation
23. Two hydroxyl groups
Haloalkane
diol
carbonyl
pyrolysis
24. What is produced when o3 with lialh4 or nabh4
hot - acidic potassium permanganate
alcohol
enantiomer
potassium permanganate
25. Diol with hydroxyl group on same carbon
angle strain
pyrolysis
markovnikov's rule
geminal
26. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
sp
ring strain
electrophilic addition of H2O
polymerization
27. Transfer of electrions from one atome to another
torsional strain
enantiomer
ionic bond
Acetylene
28. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
gauche conformation
stereoisomers
Acetylene
meso compound
29. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
halogenation
protic solvent
absolute configuration
structural isomers
30. Is bonded to only one other carbon atom
protic solvent
primary carbon
halogenation
aprotic solvent
31. Monosubstituted ethylene
nonbonded strain
torsional strain
ethers
Vinyl
32. Zn/h or CH3/s with ozonolysis
primary carbon
electrophilic addition of H2O
reducing
aprotic solvent
33. Non mirror image of configurational isomers. cis and trans alkenes are them. possible when a molecule has two or more stereogenic centers that differ at some but not alll of the centers. they require multiple chiral centers.
Alkane nomenclature
diol
diastereomers
pyrolysis
34. Propylenes attached to a backbone at the C-3 position. Meaning the double bond at end of the chain and single bonded carbon at rest
allyl
combustion - disproportionation - free - radical substitution - pyrolysis
conformational isomer
reducing
35. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
Alkane
aldehyde
enantiomer
polymerization
36. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
primary carbon
angle strain
chiral center
electrophilic addition
37. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
propionaldehyde
ethers
torsional strain
hydroboration
38. Moleculse that have the opposite configuration at their one chiral center. or if multiple chiral centers - must have the opposite configuration at every one of their chiral centers to be enantiomers. identical physical properties and much of the same
disproportionation
conformational isomer
enantiomer
amines
39. Iso - neo - cyclo
chiral center
initiation propagation termination
not ignored
y- root - en -x-yne
40. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
cold potassium permanganate
y- root - en -x-yne
acetaldehyde
electrophilic addition
41. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
acetaldehyde
specific rotation
electrophilic addition of X2
42. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
achiral
carbonyl
geometric isomers
hot - acidic potassium permanganate
43. Common name for ethyne
absolute configuration
Acetylene
ethers
sigma bond
44. A molecule with an internal plane of symmetry
electrophilic addition of free radicals
methylene
meso compound
pi bond
45. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
formaldehyde
allyl
y- root - en -x-yne
ring flip
46. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
47. If reagent has a bunch of oxygen
oxidation
achiral
alcohol
angle strain
48. Occur when a molecule is broken down by heat. used to reduce the avverage molecular weight of heavy oils. c - c - bonds are cleave dand make small chain alkyl radicals that recombine to form different alkanes
2^n
pyrolysis
carboxylic acid
reducing
49. When boat flips
Alkane nomenclature
ring flip
enantiomer
initiation propagation termination
50. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
hot - acidic potassium permanganate
achiral
ethers
basicity