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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. Carbon double bonded to an oxygen
chiral
carbonyl
triple bond
Vinyl
2. Transfer of electrions from one atome to another
diastereomers
primary carbon
ionic bond
ozonolysis
3. Most favorable of staggared conformations
Alkyne
anti conformation
covalent bond
nucleophile
4. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
acetaldehyde
pi bond
fischer projection
saturated hydrocarbon
5. Lowest priority group projects into the page
fischer projection
methylene
Alkyne
electrophilic addition of X2
6. 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
covalent bond
protic solvent
chiral
amines
7. Sharing of electron between atoms
isomer
Alkene
enantiomer
covalent bond
8. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
achiral
ozonolysis
peroxycarboxylic acid
alkyne
9. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
disproportionation
electrophile
saturated hydrocarbon
hot - acidic potassium permanganate
10. Carbon with four different substituents and lack a plane of symmetry
propionaldehyde
chiral center
sp3
pi bond
11. Methyl are 60 degrees apart. kinda stable
specific rotation
methylene
configuration
gauche conformation
12. Iso - neo - cyclo
not ignored
Vinyl
racemic mixture
geminal
13. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
electrophilic addition of X2
C3H8 + 5O2 = 3CO2 + 4H2O + heat
pyrolysis
Acetylene
14. Refers to the =CH2 group
gauche conformation
relative configuration
halogenation
methylene
15. Common name for ethyne
relative configuration
Acetylene
amines
quantum numbers
16. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
reducing
stereoisomers
mcpba
sigma bond
17. N - l - ml - ms
hot - acidic potassium permanganate
propionaldehyde
quantum numbers
carbonyl
18. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
y- root - en -x-yne
gauche conformation
relative configuration
enantiomer
19. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
basicity
not ignored
electrophilic addition of HX
anti conformation
20. When bond angles deviate from ideal values
angle strain
combustion - disproportionation - free - radical substitution - pyrolysis
initiation propagation termination
Acetylene
21. Object that is not superimposable upon mirror image
electrophilic addition of H2O
chiral
carboxylic acid
formaldehyde
22. Name for mathanal
saturated hydrocarbon
chiral center
formaldehyde
pi bond
23. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
diol
hydroboration
polymerization
24. Formed by mixing different types of orbitals
C3H8 + 5O2 = 3CO2 + 4H2O + heat
torsional strain
electrophilic addition of free radicals
hybridization
25. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
propionaldehyde
absolute configuration
sp2
ozonolysis
26. 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.
diastereomers
stereoisomers
pi bond
protic solvent
27. One s and three p orbitals
ionic bond
aldehyde
sp3
methylene
28. 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
structural isomers
C3H8 + 5O2 = 3CO2 + 4H2O + heat
catalytic hydrogenation
quantum numbers
29. Rotations cancel each other out therefore no optical activity
racemic mixture
Alkane nomenclature
electrophilic addition of free radicals
geometric isomers
30. Diols with hydroxyl group on adjacent carbon
ionic bond
sp
vicinal
methylene
31. Alphabetical order of alkane rxn
combustion - disproportionation - free - radical substitution - pyrolysis
geminal
electrophilic addition of HX
ozonolysis
32. Goal is to produce most stable carbocation
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33. No double bonds. it has the maximum number of hydrogens.
ring flip
saturated hydrocarbon
polymerization
optical activity
34. F - CL - Br - I
sp3
electrophilic addition of X2
halogenation
halogen
35. Carbonyl located in middle or somewhere in chane. Named with One
chiral center
ketone
2^n
Ignored
36. Most similar. same molecule only at different points in their rotation. show them with newmans projections
lindlar's catalyst
conformational isomer
relative configuration
vicinal
37. 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
specific rotation
chiral center
allyl
pyrolysis
38. Highest energy no separation. or 120 separation.
eclipsed conformation
peroxycarboxylic acid
Haloalkane
pi bond
39. When boat flips
ring flip
racemic mixture
hybridization
initiation propagation termination
40. Name for propanal
peroxycarboxylic acid
nonbonded strain
propionaldehyde
weak bases
41. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
eclipsed conformation
alkyne
geometric isomers
reducing
42. 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
potassium permanganate
sp
enantiomer
hybridization
43. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
optical activity
covalent bond
diol
halogenation
44. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
fischer projection
relative configuration
basicity
alcohol
45. O3
ozonolysis
reducing
stereoisomers
Alkene
46. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
electrophilic addition of free radicals
electrophilic addition of X2
halogen
peroxycarboxylic acid
47. Arise from angle strain - torsional strian and nonbonded strain
hybridization
halogenation
ring strain
relative configuration
48. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
Combustion
pi bond
quantum numbers
polymerization
49. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
conformational isomer
quantum numbers
reducing
aldehyde
50. How many stereoisomers can a molecule have with n chiral centers
2^n
Alkane nomenclature
achiral
electrophilic addition of H2O