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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. Object that is not superimposable upon mirror image
specific rotation
carboxylic acid
chiral
gauche conformation
2. 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
isomer
Alkane nomenclature
sp2
catalytic hydrogenation
3. Compounds with halogen
vicinal
disproportionation
Haloalkane
protic solvent
4. Refers to the =CH2 group
geminal
geometric isomers
Haloalkane
methylene
5. M - chloroperoxybenzoic acid
electrophilic addition of free radicals
aprotic solvent
mcpba
triple bond
6. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
quantum numbers
pi bond
stereoisomers
nonbonded strain
7. 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.
disproportionation
basicity
propionaldehyde
diastereomers
8. Di - tri - t - sec - n -
Ignored
amines
combustion - disproportionation - free - radical substitution - pyrolysis
acetaldehyde
9. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
achiral
torsional strain
electrophile
basicity
10. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
enantiomer
sp3
molecular orbital
triple bond
11. Spatial arrangement of the atoms or groups of a sterioisomer
hybridization
nonbonded strain
configuration
Vinyl
12. A = observed rotation / concentration * length
ionic bond
Haloalkane
carbonyl
specific rotation
13. Sharing of electron between atoms
electrophilic addition
covalent bond
sp3
amines
14. Carbon double bonded to an oxygen
disproportionation
triple bond
carbonyl
Alkane
15. Most favorable of staggared conformations
halogenation
Alkane nomenclature
anti conformation
methylene
16. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
relative configuration
cold potassium permanganate
racemic mixture
nucleophile
17. 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
markovnikov's rule
pyrolysis
specific rotation
sp2
18. Functionality is specified by alkoxy- prefix. ROR
hot - acidic potassium permanganate
saturated hydrocarbon
ethers
optical activity
19. 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-
sp2
eclipsed conformation
amines
2^n
20. One s and two p 120 degree apart
sp3
structural isomers
Vinyl
sp2
21. Use the Greek root for the number of carbons followed by the ending - - ane
vicinal
Alkane nomenclature
halogenation
not ignored
22. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
fischer projection
specific rotation
aldehyde
reducing
23. Most similar. same molecule only at different points in their rotation. show them with newmans projections
electrophilic addition of H2O
geminal
conformational isomer
nucleophile
24. Kmno4
potassium permanganate
primary carbon
racemic mixture
nucleophile
25. Not solvated
configuration
electrophilic addition of free radicals
markovnikov's rule
aprotic solvent
26. Monosubstituted ethylene
Vinyl
specific rotation
configuration
not ignored
27. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
chiral center
carboxylic acid
geometric isomers
diol
28. Name for propanal
racemic mixture
electrophile
pi bond
propionaldehyde
29. Same molecular formula but different structure
anti conformation
isomer
diol
mcpba
30. If a compound is able to rotate plane polarized light.
optical activity
Alkane
sp
structural isomers
31. Name for ethanal
chiral
acetaldehyde
markovnikov's rule
pyrolysis
32. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
sp2
propionaldehyde
electrophilic addition of H2O
Alkene
33. 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
electrophilic addition
Haloalkane
not ignored
34. Chain of carbons connected by single bonds with hydrogen atoms attached.
ionic bond
Alkane
meso compound
ring flip
35. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
electrophilic addition of H2O
configuration
acetaldehyde
y- root - en -x-yne
36. Carbon with four different substituents and lack a plane of symmetry
absolute configuration
fischer projection
Alkane
chiral center
37. Two hydroxyl groups
cold potassium permanganate
diol
acetaldehyde
oxidation
38. Diols with hydroxyl group on adjacent carbon
ozonolysis
halogenation
Alkane
vicinal
39. Carbonyl located in middle or somewhere in chane. Named with One
chiral center
carboxylic acid
lindlar's catalyst
ketone
40. Arise from angle strain - torsional strian and nonbonded strain
ethers
ring strain
protic solvent
C3H8 + 5O2 = 3CO2 + 4H2O + heat
41. Lowest priority group projects into the page
meso compound
formaldehyde
fischer projection
ring flip
42. Rotations cancel each other out therefore no optical activity
markovnikov's rule
racemic mixture
initiation propagation termination
reducing
43. Highest energy no separation. or 120 separation.
cold potassium permanganate
eclipsed conformation
sp2
methylene
44. Iso - neo - cyclo
enantiomer
achiral
chiral center
not ignored
45. One s and three p orbitals
sp3
electrophile
angle strain
amines
46. Charged - need electrons
halogen
sigma bond
electrophile
nucleophile
47. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
peroxycarboxylic acid
alkyne
electrophilic addition of HX
isomer
48. No double bonds. it has the maximum number of hydrogens.
chiral
saturated hydrocarbon
gauche conformation
stereoisomers
49. When boat flips
eclipsed conformation
isomer
ring flip
combustion - disproportionation - free - radical substitution - pyrolysis
50. Combustion reaction occurs through a radical process
not ignored
C3H8 + 5O2 = 3CO2 + 4H2O + heat
vicinal
acetaldehyde