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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. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
enantiomer
aldehyde
pi bond
molecular orbital
2. How many stereoisomers can a molecule have with n chiral centers
ethers
2^n
electrophilic addition of H2O
combustion - disproportionation - free - radical substitution - pyrolysis
3. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
quantum numbers
ring flip
polymerization
chiral
4. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
ring flip
stereoisomers
lindlar's catalyst
Alkane
5. Goal is to produce most stable carbocation
6. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
angle strain
Acetylene
chiral
relative configuration
7. Most similar. same molecule only at different points in their rotation. show them with newmans projections
specific rotation
conformational isomer
enantiomer
allyl
8. Results when cyclic molecules must assume conformations that have eclipsed interactions
torsional strain
ketone
diol
electrophilic addition of HX
9. Refers to the =CH2 group
carboxylic acid
isomer
Alkyne
methylene
10. Name for mathanal
catalytic hydrogenation
formaldehyde
allyl
molecular orbital
11. Kmno4
specific rotation
potassium permanganate
Haloalkane
electrophilic addition of HX
12. When bond angles deviate from ideal values
angle strain
hybridization
lindlar's catalyst
peroxycarboxylic acid
13. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Combustion
geometric isomers
gauche conformation
acetaldehyde
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.
markovnikov's rule
nonbonded strain
ozonolysis
Combustion
15. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
pi bond
alkyne
disproportionation
eclipsed conformation
16. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkene
halogenation
fischer projection
chiral
17. What are the best leaving groups?
allyl
weak bases
primary carbon
diastereomers
18. N - l - ml - ms
mcpba
quantum numbers
ketone
lindlar's catalyst
19. 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
anti conformation
allyl
chiral
absolute configuration
20. Transfer of electrions from one atome to another
potassium permanganate
Combustion
ionic bond
electrophilic addition
21. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
enantiomer
peroxycarboxylic acid
electrophilic addition of H2O
reducing
22. Alphabetical order of alkane rxn
geometric isomers
torsional strain
combustion - disproportionation - free - radical substitution - pyrolysis
sp3
23. Common name for ethyne
optical activity
C3H8 + 5O2 = 3CO2 + 4H2O + heat
ring flip
Acetylene
24. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
meso compound
ozonolysis
geometric isomers
methylene
25. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
saturated hydrocarbon
electrophilic addition of HX
vicinal
Alkane
26. Is bonded to only one other carbon atom
amines
fischer projection
hot - acidic potassium permanganate
primary carbon
27. If reagent has a bunch of oxygen
oxidation
achiral
Alkane
alcohol
28. Same molecular formula but different structure
quantum numbers
sp
isomer
enantiomer
29. Object that is not superimposable upon mirror image
sp
anti conformation
vicinal
chiral
30. Monosubstituted ethylene
electrophile
Vinyl
pyrolysis
gauche conformation
31. Diols with hydroxyl group on adjacent carbon
basicity
markovnikov's rule
Alkane nomenclature
vicinal
32. Formed by mixing different types of orbitals
ring flip
conformational isomer
hybridization
electrophilic addition
33. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
primary carbon
electrophilic addition of X2
pi bond
oxidation
34. What is produced when o3 with lialh4 or nabh4
alcohol
nonbonded strain
ketone
enantiomer
35. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
racemic mixture
pi bond
peroxycarboxylic acid
optical activity
36. Name for ethanal
isomer
halogenation
2^n
acetaldehyde
37. If a compound is able to rotate plane polarized light.
saturated hydrocarbon
meso compound
propionaldehyde
optical activity
38. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
enantiomer
hot - acidic potassium permanganate
racemic mixture
weak bases
39. 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.
disproportionation
molecular orbital
hot - acidic potassium permanganate
electrophilic addition of H2O
40. Methyl are 60 degrees apart. kinda stable
anti conformation
chiral center
gauche conformation
halogenation
41. 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
specific rotation
optical activity
catalytic hydrogenation
diol
42. Di - tri - t - sec - n -
electrophilic addition of X2
sigma bond
halogenation
Ignored
43. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
aprotic solvent
peroxycarboxylic acid
sigma bond
electrophilic addition of HX
44. Solvents with protons in solution - e.g. water or alcohol. large atoms tend to be better nucleophiles in here because they can shed the solvating protons around them and are more polarizable
protic solvent
carboxylic acid
Combustion
sp3
45. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
basicity
absolute configuration
ionic bond
reducing
46. One s and two p 120 degree apart
methylene
ozonolysis
ethers
sp2
47. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
gauche conformation
potassium permanganate
electrophile
electrophilic addition
48. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
hydroboration
ketone
electrophilic addition of free radicals
specific rotation
49. Most favorable of staggared conformations
racemic mixture
hydroboration
diol
anti conformation
50. Spatial arrangement of the atoms or groups of a sterioisomer
formaldehyde
anti conformation
specific rotation
configuration