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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. Charged - need electrons
oxidizing
peroxycarboxylic acid
racemic mixture
electrophile
2. 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-
ionic bond
enantiomer
aldehyde
amines
3. Lowest priority group projects into the page
fischer projection
quantum numbers
achiral
ethers
4. Highest energy no separation. or 120 separation.
eclipsed conformation
electrophilic addition of H2O
chiral
polymerization
5. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
oxidation
Alkene
ketone
Vinyl
6. When boat flips
alcohol
primary carbon
halogen
ring flip
7. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
lindlar's catalyst
y- root - en -x-yne
protic solvent
enantiomer
8. Methyl are 60 degrees apart. kinda stable
initiation propagation termination
sp2
saturated hydrocarbon
gauche conformation
9. 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
combustion - disproportionation - free - radical substitution - pyrolysis
catalytic hydrogenation
absolute configuration
chiral
10. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
stereoisomers
torsional strain
diastereomers
oxidizing
11. N - l - ml - ms
quantum numbers
halogenation
Combustion
carbonyl
12. Most favorable of staggared conformations
torsional strain
hybridization
aldehyde
anti conformation
13. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
achiral
ionic bond
electrophilic addition of X2
Alkyne
14. Results when nonadjacent atoms or groups compete for space. dominant source of energy in flagpole interactions of the boat conformation. thus it goes in various conformations like chair boat and twist.
halogen
nonbonded strain
torsional strain
electrophilic addition of X2
15. Same molecular formula but different structure
formaldehyde
electrophilic addition
isomer
specific rotation
16. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
electrophilic addition of H2O
2^n
covalent bond
disproportionation
17. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
mcpba
hydroboration
electrophilic addition of X2
Combustion
18. 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
sp
electrophilic addition of HX
isomer
enantiomer
19. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
Haloalkane
sigma bond
halogen
Alkane
20. Combustion reaction occurs through a radical process
C3H8 + 5O2 = 3CO2 + 4H2O + heat
structural isomers
sp3
amines
21. Carbon carbon triple bonds. Suffix-yne.
chiral center
sigma bond
methylene
Alkyne
22. Refers to the =CH2 group
torsional strain
hot - acidic potassium permanganate
aldehyde
methylene
23. Carbon double bonded to an oxygen
reducing
carbonyl
covalent bond
formaldehyde
24. Not solvated
aprotic solvent
peroxycarboxylic acid
disproportionation
sp3
25. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
sp3
aprotic solvent
basicity
carboxylic acid
26. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
2^n
peroxycarboxylic acid
ring flip
absolute configuration
27. 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
catalytic hydrogenation
electrophilic addition
nonbonded strain
allyl
28. Name for ethanal
reducing
sp
primary carbon
acetaldehyde
29. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
aldehyde
carbonyl
saturated hydrocarbon
vicinal
30. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
electrophilic addition of H2O
chiral center
protic solvent
cold potassium permanganate
31. Common name for ethyne
hybridization
Acetylene
isomer
gauche conformation
32. What are the best leaving groups?
oxidation
potassium permanganate
weak bases
Acetylene
33. A = observed rotation / concentration * length
C3H8 + 5O2 = 3CO2 + 4H2O + heat
Acetylene
specific rotation
ketone
34. Carbonyl located in middle or somewhere in chane. Named with One
Acetylene
ring strain
ketone
hydroboration
35. Rotations cancel each other out therefore no optical activity
ring flip
quantum numbers
molecular orbital
racemic mixture
36. Compounds with halogen
Haloalkane
mcpba
electrophilic addition
halogen
37. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
not ignored
Alkane
electrophilic addition
ring flip
38. Is bonded to only one other carbon atom
initiation propagation termination
ring strain
isomer
primary carbon
39. A sigma bond and two pi bonds
triple bond
relative configuration
chiral center
ketone
40. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
alcohol
specific rotation
Alkane
41. Diols with hydroxyl group on adjacent carbon
oxidizing
ozonolysis
vicinal
halogen
42. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
not ignored
basicity
gauche conformation
aldehyde
43. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
gauche conformation
primary carbon
relative configuration
structural isomers
44. No double bonds. it has the maximum number of hydrogens.
saturated hydrocarbon
2^n
Haloalkane
C3H8 + 5O2 = 3CO2 + 4H2O + heat
45. Di - tri - t - sec - n -
anti conformation
pi bond
potassium permanganate
Ignored
46. Diol with hydroxyl group on same carbon
combustion - disproportionation - free - radical substitution - pyrolysis
alkyne
geminal
Haloalkane
47. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
molecular orbital
sp
Acetylene
stereoisomers
48. Zn/h or CH3/s with ozonolysis
halogen
Combustion
Alkene
reducing
49. One s and three p orbitals
relative configuration
angle strain
sp3
achiral
50. Share molecular formula but have different chemical and physical properties
mcpba
enantiomer
pyrolysis
structural isomers