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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 bond angles deviate from ideal values
anti conformation
angle strain
carboxylic acid
2^n
2. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
ring flip
carboxylic acid
oxidation
optical activity
3. Hydrocarbon with one or more carbon carbon triple bond
C3H8 + 5O2 = 3CO2 + 4H2O + heat
Acetylene
alkyne
diol
4. What is produced when o3 with lialh4 or nabh4
electrophilic addition of X2
Acetylene
alcohol
carboxylic acid
5. Functionality is specified by alkoxy- prefix. ROR
sp3
pi bond
ethers
initiation propagation termination
6. Name for propanal
ring strain
pyrolysis
propionaldehyde
C3H8 + 5O2 = 3CO2 + 4H2O + heat
7. Same molecular formula but different structure
saturated hydrocarbon
electrophile
ring strain
isomer
8. M - chloroperoxybenzoic acid
structural isomers
peroxycarboxylic acid
mcpba
pi bond
9. 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.
achiral
Acetylene
ring strain
diastereomers
10. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
geometric isomers
cold potassium permanganate
Acetylene
triple bond
11. Kmno4
racemic mixture
potassium permanganate
methylene
reducing
12. Methyl are 60 degrees apart. kinda stable
propionaldehyde
electrophilic addition of H2O
sp3
gauche conformation
13. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkene
ozonolysis
potassium permanganate
triple bond
14. Iso - neo - cyclo
pi bond
chiral center
not ignored
ketone
15. Goal is to produce most stable carbocation
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16. No double bonds. it has the maximum number of hydrogens.
fischer projection
reducing
methylene
saturated hydrocarbon
17. 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
mcpba
fischer projection
halogenation
18. Share molecular formula but have different chemical and physical properties
2^n
polymerization
structural isomers
electrophilic addition
19. Monosubstituted ethylene
angle strain
Vinyl
triple bond
amines
20. Zn/h or CH3/s with ozonolysis
reducing
pi bond
sp
peroxycarboxylic acid
21. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
cold potassium permanganate
enantiomer
chiral center
electrophilic addition of X2
22. Sharing of electron between atoms
allyl
covalent bond
amines
y- root - en -x-yne
23. Most similar. same molecule only at different points in their rotation. show them with newmans projections
allyl
fischer projection
primary carbon
conformational isomer
24. Combustion reaction occurs through a radical process
alcohol
quantum numbers
C3H8 + 5O2 = 3CO2 + 4H2O + heat
weak bases
25. Rotations cancel each other out therefore no optical activity
configuration
sp3
racemic mixture
specific rotation
26. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
molecular orbital
reducing
protic solvent
electrophilic addition of free radicals
27. 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
cold potassium permanganate
basicity
mcpba
pyrolysis
28. One s and three p orbitals
2^n
sp
sp3
electrophilic addition
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-
oxidation
torsional strain
optical activity
amines
30. 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
enantiomer
mcpba
saturated hydrocarbon
allyl
31. Chain of carbons connected by single bonds with hydrogen atoms attached.
meso compound
Alkane
alcohol
lindlar's catalyst
32. N - l - ml - ms
quantum numbers
Alkene
relative configuration
combustion - disproportionation - free - radical substitution - pyrolysis
33. 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
hybridization
catalytic hydrogenation
y- root - en -x-yne
hot - acidic potassium permanganate
34. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
anti conformation
electrophilic addition
nucleophile
nonbonded strain
35. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
carbonyl
sp3
markovnikov's rule
pi bond
36. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
acetaldehyde
basicity
anti conformation
structural isomers
37. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
propionaldehyde
not ignored
achiral
38. Results when cyclic molecules must assume conformations that have eclipsed interactions
conformational isomer
Combustion
torsional strain
geminal
39. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
relative configuration
protic solvent
hybridization
chiral
40. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
absolute configuration
methylene
alcohol
sigma bond
41. Charged - need electrons
chiral
Acetylene
ozonolysis
electrophile
42. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
basicity
peroxycarboxylic acid
absolute configuration
amines
43. Not solvated
aprotic solvent
Ignored
halogenation
specific rotation
44. Carbon carbon triple bonds. Suffix-yne.
specific rotation
electrophilic addition of HX
Alkyne
cold potassium permanganate
45. Refers to the =CH2 group
initiation propagation termination
relative configuration
torsional strain
methylene
46. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
polymerization
anti conformation
y- root - en -x-yne
specific rotation
47. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
ethers
amines
disproportionation
lindlar's catalyst
48. 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
diastereomers
initiation propagation termination
protic solvent
carboxylic acid
49. A molecule with an internal plane of symmetry
methylene
meso compound
nucleophile
vicinal
50. A sigma bond and two pi bonds
triple bond
halogen
geminal
chiral center