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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. 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.
peroxycarboxylic acid
diastereomers
covalent bond
alcohol
2. Most similar. same molecule only at different points in their rotation. show them with newmans projections
ionic bond
amines
conformational isomer
hydroboration
3. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
mcpba
hydroboration
allyl
relative configuration
4. A = observed rotation / concentration * length
markovnikov's rule
protic solvent
hot - acidic potassium permanganate
specific rotation
5. Not solvated
markovnikov's rule
ozonolysis
isomer
aprotic solvent
6. Monosubstituted ethylene
electrophilic addition of X2
Vinyl
2^n
meso compound
7. Functionality is specified by alkoxy- prefix. ROR
hydroboration
conformational isomer
ketone
ethers
8. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
geometric isomers
ring strain
methylene
combustion - disproportionation - free - radical substitution - pyrolysis
9. Charged - need electrons
Alkyne
geometric isomers
nonbonded strain
electrophile
10. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
oxidizing
Vinyl
aldehyde
triple bond
11. Results when cyclic molecules must assume conformations that have eclipsed interactions
mcpba
2^n
amines
torsional strain
12. Highest energy no separation. or 120 separation.
2^n
eclipsed conformation
y- root - en -x-yne
chiral
13. Carbon carbon triple bonds. Suffix-yne.
vicinal
Alkyne
chiral center
anti conformation
14. A molecule with an internal plane of symmetry
pi bond
protic solvent
meso compound
potassium permanganate
15. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
enantiomer
diol
specific rotation
halogen
16. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
basicity
gauche conformation
pi bond
lindlar's catalyst
17. What is produced when o3 with lialh4 or nabh4
Alkene
Alkane nomenclature
alcohol
electrophilic addition of HX
18. Name for propanal
carbonyl
markovnikov's rule
vicinal
propionaldehyde
19. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
carboxylic acid
cold potassium permanganate
hydroboration
primary carbon
20. If reagent has a bunch of oxygen
nucleophile
oxidation
molecular orbital
acetaldehyde
21. Two hydroxyl groups
diol
eclipsed conformation
protic solvent
geometric isomers
22. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Combustion
pyrolysis
diastereomers
amines
23. Formed by mixing different types of orbitals
hybridization
polymerization
catalytic hydrogenation
sp2
24. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
polymerization
disproportionation
propionaldehyde
aprotic solvent
25. Refers to the =CH2 group
fischer projection
covalent bond
Alkane nomenclature
methylene
26. How many stereoisomers can a molecule have with n chiral centers
chiral center
C3H8 + 5O2 = 3CO2 + 4H2O + heat
2^n
structural isomers
27. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
isomer
geminal
basicity
ring flip
28. Name for mathanal
chiral center
formaldehyde
ozonolysis
ionic bond
29. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
electrophilic addition
saturated hydrocarbon
ring strain
configuration
30. Arise from angle strain - torsional strian and nonbonded strain
Vinyl
ozonolysis
molecular orbital
ring strain
31. One s and three p orbitals
halogen
saturated hydrocarbon
sp3
gauche conformation
32. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
nonbonded strain
C3H8 + 5O2 = 3CO2 + 4H2O + heat
allyl
electrophilic addition of HX
33. N - l - ml - ms
sp
nucleophile
quantum numbers
Acetylene
34. Diols with hydroxyl group on adjacent carbon
vicinal
aprotic solvent
electrophilic addition of free radicals
combustion - disproportionation - free - radical substitution - pyrolysis
35. Chain of carbons connected by single bonds with hydrogen atoms attached.
Combustion
hybridization
chiral center
Alkane
36. Use the Greek root for the number of carbons followed by the ending - - ane
geminal
chiral center
Alkane nomenclature
acetaldehyde
37. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
ionic bond
y- root - en -x-yne
hot - acidic potassium permanganate
gauche conformation
38. What are the best leaving groups?
sp
weak bases
propionaldehyde
torsional strain
39. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
absolute configuration
aldehyde
specific rotation
aprotic solvent
40. Object that is not superimposable upon mirror image
chiral
stereoisomers
ozonolysis
molecular orbital
41. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
halogen
electrophilic addition of X2
allyl
chiral center
42. Name for ethanal
acetaldehyde
Alkane
reducing
potassium permanganate
43. Same molecular formula but different structure
enantiomer
eclipsed conformation
pi bond
isomer
44. Methyl are 60 degrees apart. kinda stable
lindlar's catalyst
chiral center
alcohol
gauche conformation
45. Kmno4
electrophilic addition
gauche conformation
potassium permanganate
electrophilic addition of H2O
46. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkene
sigma bond
protic solvent
eclipsed conformation
47. Nitrogen containing compound - longest chain attached to nitrogen used in backbone. use e and replace with AMINE. if more complex molecule present - use prefix amino. IF additional group added - use N-
amines
eclipsed conformation
Ignored
gauche conformation
48. Iso - neo - cyclo
absolute configuration
Alkane nomenclature
not ignored
halogen
49. Hydrocarbon with one or more carbon carbon triple bond
ketone
initiation propagation termination
weak bases
alkyne
50. M - chloroperoxybenzoic acid
mcpba
structural isomers
ethers
nucleophile