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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. F - CL - Br - I
halogenation
hybridization
sigma bond
halogen
2. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
disproportionation
Alkane
torsional strain
hybridization
3. One s and two p 120 degree apart
weak bases
amines
sp2
enantiomer
4. Reducing an alkene by adding molecular hydrogen to double bond with aid of metal catalyst. e.g. pt - pd - ni. takes place on surface of metal so it does syn addition
geminal
Ignored
catalytic hydrogenation
combustion - disproportionation - free - radical substitution - pyrolysis
5. Carbon double bonded to an oxygen
weak bases
carbonyl
electrophilic addition of HX
torsional strain
6. What is produced when o3 with lialh4 or nabh4
alcohol
fischer projection
Combustion
chiral center
7. Spatial arrangement of the atoms or groups of a sterioisomer
catalytic hydrogenation
ethers
potassium permanganate
configuration
8. 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
protic solvent
diastereomers
electrophile
9. Hydrocarbon with one or more carbon carbon triple bond
basicity
sp3
alkyne
electrophilic addition of free radicals
10. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
angle strain
isomer
pi bond
y- root - en -x-yne
11. Carbon with four different substituents and lack a plane of symmetry
weak bases
chiral center
configuration
vicinal
12. Share molecular formula but have different chemical and physical properties
isomer
catalytic hydrogenation
structural isomers
methylene
13. Zn/h or CH3/s with ozonolysis
mcpba
Ignored
hydroboration
reducing
14. Object that is not superimposable upon mirror image
electrophilic addition
nonbonded strain
chiral
potassium permanganate
15. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
diastereomers
geometric isomers
y- root - en -x-yne
basicity
16. A molecule with an internal plane of symmetry
configuration
hybridization
meso compound
Alkyne
17. Two hydroxyl groups
diol
hot - acidic potassium permanganate
ionic bond
covalent bond
18. Name for propanal
propionaldehyde
conformational isomer
weak bases
peroxycarboxylic acid
19. Iso - neo - cyclo
Alkyne
not ignored
alkyne
pi bond
20. When bond angles deviate from ideal values
angle strain
not ignored
chiral
carboxylic acid
21. When two atomic orbitals combine. obtained mathematically by adding or subtracting wave functions. if sings are the same - make bonding - if different - less stable antibonding.
molecular orbital
not ignored
conformational isomer
Acetylene
22. Name for mathanal
formaldehyde
chiral
aldehyde
Alkane nomenclature
23. Goal is to produce most stable carbocation
24. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
C3H8 + 5O2 = 3CO2 + 4H2O + heat
relative configuration
diol
hydroboration
25. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
sigma bond
relative configuration
disproportionation
enantiomer
26. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
catalytic hydrogenation
reducing
electrophilic addition of X2
geminal
27. Sharing of electron between atoms
chiral center
methylene
covalent bond
propionaldehyde
28. Kmno4
markovnikov's rule
stereoisomers
potassium permanganate
Haloalkane
29. Carbonyl located in middle or somewhere in chane. Named with One
covalent bond
geometric isomers
ketone
methylene
30. Compounds with halogen
ring strain
Haloalkane
electrophilic addition of free radicals
peroxycarboxylic acid
31. Most favorable of staggared conformations
absolute configuration
ozonolysis
Combustion
anti conformation
32. Carbon carbon triple bonds. Suffix-yne.
enantiomer
carbonyl
Alkyne
sigma bond
33. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
disproportionation
stereoisomers
sp
eclipsed conformation
34. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
35. 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-
hot - acidic potassium permanganate
halogen
torsional strain
amines
36. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
ozonolysis
ring flip
chiral
37. Most similar. same molecule only at different points in their rotation. show them with newmans projections
ethers
electrophilic addition
conformational isomer
stereoisomers
38. Rotations cancel each other out therefore no optical activity
Vinyl
acetaldehyde
racemic mixture
Ignored
39. Methyl are 60 degrees apart. kinda stable
initiation propagation termination
conformational isomer
gauche conformation
markovnikov's rule
40. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
vicinal
alcohol
hydroboration
racemic mixture
41. If a compound is able to rotate plane polarized light.
optical activity
electrophilic addition of HX
electrophilic addition of free radicals
oxidizing
42. Charged - need electrons
Alkyne
vicinal
hydroboration
electrophile
43. Chain of carbons connected by single bonds with hydrogen atoms attached.
quantum numbers
chiral
Alkane
Alkane nomenclature
44. O3
ozonolysis
sp
mcpba
allyl
45. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
ethers
allyl
aldehyde
polymerization
46. Di - tri - t - sec - n -
Haloalkane
allyl
saturated hydrocarbon
Ignored
47. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
stereoisomers
formaldehyde
y- root - en -x-yne
angle strain
48. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
sigma bond
electrophilic addition of free radicals
absolute configuration
hot - acidic potassium permanganate
49. If reagent has a bunch of oxygen
combustion - disproportionation - free - radical substitution - pyrolysis
oxidation
Alkene
enantiomer
50. Results when cyclic molecules must assume conformations that have eclipsed interactions
torsional strain
carbonyl
specific rotation
Alkane nomenclature