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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. Is bonded to only one other carbon atom
primary carbon
molecular orbital
isomer
Alkane nomenclature
2. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ketone
gauche conformation
ozonolysis
ethers
3. Share molecular formula but have different chemical and physical properties
structural isomers
amines
enantiomer
isomer
4. Carbon with four different substituents and lack a plane of symmetry
configuration
sp
chiral center
2^n
5. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
configuration
alkyne
peroxycarboxylic acid
meso compound
6. 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.
eclipsed conformation
molecular orbital
Alkane
vicinal
7. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
ketone
electrophilic addition of free radicals
isomer
meso compound
8. Object that is not superimposable upon mirror image
chiral
Alkane nomenclature
eclipsed conformation
peroxycarboxylic acid
9. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkene
electrophile
sp2
configuration
10. F - CL - Br - I
nonbonded strain
Haloalkane
ketone
halogen
11. M - chloroperoxybenzoic acid
isomer
ionic bond
stereoisomers
mcpba
12. Use the Greek root for the number of carbons followed by the ending - - ane
peroxycarboxylic acid
Alkane nomenclature
conformational isomer
ozonolysis
13. 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
mcpba
disproportionation
electrophilic addition
enantiomer
14. Name for mathanal
absolute configuration
formaldehyde
potassium permanganate
reducing
15. Steps of free radical substitution
Alkene
conformational isomer
alkyne
initiation propagation termination
16. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
not ignored
geometric isomers
covalent bond
sp
17. Nucleus lover. electron rich species that are attracked to charged atoms
carboxylic acid
ozonolysis
nucleophile
basicity
18. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
peroxycarboxylic acid
quantum numbers
hydroboration
disproportionation
19. One s and two p 120 degree apart
electrophilic addition
sp2
electrophilic addition of X2
diol
20. One s and three p orbitals
hot - acidic potassium permanganate
sp3
ozonolysis
protic solvent
21. Two hydroxyl groups
diol
halogenation
Combustion
y- root - en -x-yne
22. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
vicinal
electrophilic addition of X2
pyrolysis
anti conformation
23. Chain of carbons connected by single bonds with hydrogen atoms attached.
diastereomers
sp3
ring flip
Alkane
24. Highest energy no separation. or 120 separation.
Acetylene
lindlar's catalyst
structural isomers
eclipsed conformation
25. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
electrophilic addition of H2O
racemic mixture
primary carbon
stereoisomers
26. How many stereoisomers can a molecule have with n chiral centers
diastereomers
2^n
Alkyne
ring strain
27. Sharing of electron between atoms
gauche conformation
Ignored
covalent bond
halogen
28. A = observed rotation / concentration * length
specific rotation
amines
ring flip
protic solvent
29. 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.
vicinal
methylene
C3H8 + 5O2 = 3CO2 + 4H2O + heat
diastereomers
30. Carbonyl located in middle or somewhere in chane. Named with One
sp2
alkyne
ketone
electrophilic addition of HX
31. If a compound is able to rotate plane polarized light.
optical activity
meso compound
Alkane
covalent bond
32. A molecule with an internal plane of symmetry
eclipsed conformation
meso compound
oxidation
mcpba
33. 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.
Acetylene
pi bond
y- root - en -x-yne
nonbonded strain
34. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
formaldehyde
ozonolysis
cold potassium permanganate
hot - acidic potassium permanganate
35. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
relative configuration
Alkene
peroxycarboxylic acid
optical activity
36. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
hybridization
electrophilic addition of HX
oxidation
vicinal
37. Monosubstituted ethylene
Combustion
geminal
Vinyl
chiral center
38. When boat flips
racemic mixture
ring flip
potassium permanganate
initiation propagation termination
39. Iso - neo - cyclo
halogen
acetaldehyde
Alkene
not ignored
40. What is produced when o3 with lialh4 or nabh4
Alkyne
alcohol
oxidation
Alkane nomenclature
41. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
electrophilic addition of H2O
sp
diol
reducing
42. O3
geminal
ketone
ozonolysis
ionic bond
43. Rotations cancel each other out therefore no optical activity
enantiomer
racemic mixture
ketone
acetaldehyde
44. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
C3H8 + 5O2 = 3CO2 + 4H2O + heat
methylene
polymerization
Combustion
45. Lowest priority group projects into the page
ionic bond
Alkyne
fischer projection
sigma bond
46. No double bonds. it has the maximum number of hydrogens.
ozonolysis
saturated hydrocarbon
carboxylic acid
ozonolysis
47. Compounds with halogen
racemic mixture
Haloalkane
gauche conformation
alkyne
48. Goal is to produce most stable carbocation
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49. Arise from angle strain - torsional strian and nonbonded strain
stereoisomers
ring strain
conformational isomer
carboxylic acid
50. Kmno4
pi bond
racemic mixture
stereoisomers
potassium permanganate