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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. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
meso compound
basicity
sigma bond
achiral
2. 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
sp3
aprotic solvent
methylene
enantiomer
3. 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-
ethers
quantum numbers
amines
optical activity
4. 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
diastereomers
stereoisomers
pyrolysis
electrophile
5. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
lindlar's catalyst
methylene
electrophilic addition of X2
electrophilic addition
6. Combustion reaction occurs through a radical process
fischer projection
alkyne
sigma bond
C3H8 + 5O2 = 3CO2 + 4H2O + heat
7. Formed by mixing different types of orbitals
hybridization
ring strain
disproportionation
initiation propagation termination
8. What are the best leaving groups?
absolute configuration
weak bases
Haloalkane
Alkyne
9. Methyl are 60 degrees apart. kinda stable
gauche conformation
methylene
carbonyl
structural isomers
10. Object that is not superimposable upon mirror image
molecular orbital
halogenation
gauche conformation
chiral
11. How many stereoisomers can a molecule have with n chiral centers
nucleophile
2^n
enantiomer
electrophilic addition of free radicals
12. If a compound is able to rotate plane polarized light.
optical activity
C3H8 + 5O2 = 3CO2 + 4H2O + heat
halogen
electrophilic addition of X2
13. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
chiral center
mcpba
torsional strain
Combustion
14. Kmno4
carbonyl
reducing
potassium permanganate
C3H8 + 5O2 = 3CO2 + 4H2O + heat
15. Most similar. same molecule only at different points in their rotation. show them with newmans projections
amines
disproportionation
conformational isomer
mcpba
16. O3
pyrolysis
ozonolysis
torsional strain
nucleophile
17. When bond angles deviate from ideal values
covalent bond
halogenation
aprotic solvent
angle strain
18. Zn/h or CH3/s with ozonolysis
reducing
halogenation
pyrolysis
geminal
19. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
conformational isomer
hot - acidic potassium permanganate
initiation propagation termination
ring strain
20. 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
diastereomers
enantiomer
angle strain
21. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
not ignored
disproportionation
hot - acidic potassium permanganate
isomer
22. Not solvated
diol
Ignored
aprotic solvent
ring flip
23. When boat flips
polymerization
ring flip
initiation propagation termination
optical activity
24. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
halogen
ozonolysis
polymerization
markovnikov's rule
25. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
2^n
quantum numbers
alcohol
achiral
26. Two hydroxyl groups
Acetylene
nonbonded strain
electrophilic addition of HX
diol
27. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
electrophilic addition of H2O
carbonyl
mcpba
28. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
conformational isomer
electrophilic addition of X2
ozonolysis
covalent bond
29. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
specific rotation
peroxycarboxylic acid
alcohol
acetaldehyde
30. Goal is to produce most stable carbocation
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31. Diols with hydroxyl group on adjacent carbon
relative configuration
vicinal
electrophilic addition of H2O
nonbonded strain
32. A molecule with an internal plane of symmetry
halogen
Vinyl
meso compound
ketone
33. Spatial arrangement of the atoms or groups of a sterioisomer
meso compound
gauche conformation
configuration
saturated hydrocarbon
34. Hydrocarbon with one or more carbon carbon triple bond
hybridization
enantiomer
alkyne
ring strain
35. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
primary carbon
oxidizing
electrophilic addition of free radicals
Alkane
36. Steps of free radical substitution
carboxylic acid
propionaldehyde
initiation propagation termination
ring flip
37. Results when cyclic molecules must assume conformations that have eclipsed interactions
oxidation
torsional strain
allyl
optical activity
38. 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.
Vinyl
electrophilic addition of X2
electrophilic addition
diastereomers
39. Same molecular formula but different structure
initiation propagation termination
sigma bond
isomer
alkyne
40. Di - tri - t - sec - n -
geminal
Ignored
nonbonded strain
hybridization
41. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
pyrolysis
y- root - en -x-yne
angle strain
ozonolysis
42. No double bonds. it has the maximum number of hydrogens.
saturated hydrocarbon
initiation propagation termination
relative configuration
methylene
43. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
absolute configuration
isomer
optical activity
disproportionation
44. One s and two p 120 degree apart
ring flip
reducing
hydroboration
sp2
45. 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.
nonbonded strain
fischer projection
Alkyne
peroxycarboxylic acid
46. Arise from angle strain - torsional strian and nonbonded strain
Vinyl
ring strain
carboxylic acid
racemic mixture
47. Carbonyl located in middle or somewhere in chane. Named with One
ketone
oxidation
carbonyl
basicity
48. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
2^n
reducing
stereoisomers
electrophilic addition of H2O
49. Share molecular formula but have different chemical and physical properties
structural isomers
allyl
conformational isomer
disproportionation
50. Sharing of electron between atoms
covalent bond
Ignored
Vinyl
oxidizing