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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. Goal is to produce most stable carbocation
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2. Charged - need electrons
methylene
diol
electrophile
enantiomer
3. 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.
conformational isomer
molecular orbital
relative configuration
potassium permanganate
4. How many stereoisomers can a molecule have with n chiral centers
not ignored
2^n
achiral
triple bond
5. One s and three p orbitals
sp3
aldehyde
specific rotation
ring strain
6. O3
ozonolysis
peroxycarboxylic acid
electrophile
aprotic solvent
7. N - l - ml - ms
vicinal
quantum numbers
sp3
enantiomer
8. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
stereoisomers
C3H8 + 5O2 = 3CO2 + 4H2O + heat
oxidizing
halogen
9. Nucleus lover. electron rich species that are attracked to charged atoms
nucleophile
eclipsed conformation
Alkyne
enantiomer
10. Steps of free radical substitution
initiation propagation termination
racemic mixture
oxidation
markovnikov's rule
11. 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
hot - acidic potassium permanganate
carboxylic acid
pi bond
enantiomer
12. Results when cyclic molecules must assume conformations that have eclipsed interactions
electrophilic addition of HX
torsional strain
angle strain
peroxycarboxylic acid
13. Combustion reaction occurs through a radical process
gauche conformation
C3H8 + 5O2 = 3CO2 + 4H2O + heat
ketone
relative configuration
14. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
electrophilic addition of H2O
lindlar's catalyst
molecular orbital
electrophile
15. No double bonds. it has the maximum number of hydrogens.
electrophilic addition of X2
saturated hydrocarbon
isomer
torsional strain
16. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
nonbonded strain
chiral
electrophilic addition of free radicals
reducing
17. Diols with hydroxyl group on adjacent carbon
Alkane
electrophilic addition of X2
vicinal
Alkene
18. Iso - neo - cyclo
diastereomers
not ignored
geometric isomers
hot - acidic potassium permanganate
19. What is produced when o3 with lialh4 or nabh4
optical activity
alcohol
Alkane
sigma bond
20. If reagent has a bunch of oxygen
oxidation
gauche conformation
hydroboration
potassium permanganate
21. Name for ethanal
polymerization
C3H8 + 5O2 = 3CO2 + 4H2O + heat
diol
acetaldehyde
22. Alphabetical order of alkane rxn
racemic mixture
molecular orbital
combustion - disproportionation - free - radical substitution - pyrolysis
electrophilic addition of HX
23. A sigma bond and two pi bonds
electrophilic addition of free radicals
triple bond
Combustion
Alkyne
24. Name for mathanal
oxidizing
gauche conformation
sp2
formaldehyde
25. M - chloroperoxybenzoic acid
mcpba
y- root - en -x-yne
reducing
amines
26. Carbon carbon triple bonds. Suffix-yne.
mcpba
Alkyne
ethers
hot - acidic potassium permanganate
27. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
electrophilic addition
nucleophile
mcpba
basicity
28. Name for propanal
basicity
diastereomers
absolute configuration
propionaldehyde
29. 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-
sigma bond
ozonolysis
fischer projection
amines
30. Not solvated
combustion - disproportionation - free - radical substitution - pyrolysis
hot - acidic potassium permanganate
aprotic solvent
ozonolysis
31. When boat flips
Vinyl
ring flip
chiral center
anti conformation
32. Formed by mixing different types of orbitals
aldehyde
racemic mixture
pi bond
hybridization
33. A = observed rotation / concentration * length
specific rotation
pyrolysis
initiation propagation termination
aldehyde
34. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
electrophilic addition
electrophile
hydroboration
disproportionation
35. Highest energy no separation. or 120 separation.
eclipsed conformation
halogen
geminal
protic solvent
36. If a compound is able to rotate plane polarized light.
optical activity
polymerization
electrophilic addition
alcohol
37. When bond angles deviate from ideal values
alkyne
disproportionation
electrophilic addition of X2
angle strain
38. Spatial arrangement of the atoms or groups of a sterioisomer
Alkyne
configuration
y- root - en -x-yne
Acetylene
39. F - CL - Br - I
pyrolysis
halogen
relative configuration
alkyne
40. A molecule with an internal plane of symmetry
amines
ring strain
absolute configuration
meso compound
41. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
Ignored
mcpba
sp3
y- root - en -x-yne
42. Lowest priority group projects into the page
isomer
fischer projection
not ignored
aldehyde
43. Common name for ethyne
disproportionation
configuration
gauche conformation
Acetylene
44. Most favorable of staggared conformations
anti conformation
Alkane
hot - acidic potassium permanganate
meso compound
45. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
cold potassium permanganate
polymerization
ethers
ring strain
46. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
primary carbon
Alkane nomenclature
geometric isomers
combustion - disproportionation - free - radical substitution - pyrolysis
47. One s and two p 120 degree apart
sp2
Alkyne
aldehyde
ethers
48. Di - tri - t - sec - n -
absolute configuration
ozonolysis
Combustion
Ignored
49. Hydrocarbon with one or more carbon carbon triple bond
hot - acidic potassium permanganate
alkyne
pyrolysis
electrophilic addition of H2O
50. 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
fischer projection
formaldehyde
geometric isomers
pyrolysis