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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. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
hybridization
y- root - en -x-yne
oxidation
polymerization
2. Di - tri - t - sec - n -
weak bases
saturated hydrocarbon
alcohol
Ignored
3. When bond angles deviate from ideal values
protic solvent
cold potassium permanganate
chiral
angle strain
4. 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
weak bases
cold potassium permanganate
enantiomer
oxidizing
5. Diol with hydroxyl group on same carbon
absolute configuration
Ignored
peroxycarboxylic acid
geminal
6. 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-
combustion - disproportionation - free - radical substitution - pyrolysis
sp2
enantiomer
amines
7. 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
Alkane nomenclature
weak bases
catalytic hydrogenation
enantiomer
8. Lowest priority group projects into the page
methylene
fischer projection
protic solvent
hybridization
9. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
fischer projection
covalent bond
acetaldehyde
disproportionation
10. Hydrocarbon with one or more carbon carbon triple bond
angle strain
carbonyl
alkyne
reducing
11. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
isomer
potassium permanganate
basicity
Haloalkane
12. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkane
electrophilic addition of X2
mcpba
Alkene
13. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
Ignored
ketone
electrophilic addition of free radicals
hot - acidic potassium permanganate
14. Carbon double bonded to an oxygen
carbonyl
ethers
combustion - disproportionation - free - radical substitution - pyrolysis
diastereomers
15. 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.
reducing
electrophile
diastereomers
geometric isomers
16. Alphabetical order of alkane rxn
ozonolysis
electrophilic addition of H2O
anti conformation
combustion - disproportionation - free - radical substitution - pyrolysis
17. 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
hybridization
pyrolysis
lindlar's catalyst
Haloalkane
18. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
aldehyde
sp
initiation propagation termination
absolute configuration
19. O3
ozonolysis
allyl
nonbonded strain
hydroboration
20. Two hydroxyl groups
halogenation
diol
stereoisomers
hot - acidic potassium permanganate
21. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
primary carbon
alkyne
aldehyde
geometric isomers
22. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
oxidation
electrophile
electrophilic addition of HX
electrophilic addition of free radicals
23. Methyl are 60 degrees apart. kinda stable
primary carbon
gauche conformation
specific rotation
quantum numbers
24. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
2^n
sigma bond
C3H8 + 5O2 = 3CO2 + 4H2O + heat
hot - acidic potassium permanganate
25. Most favorable of staggared conformations
combustion - disproportionation - free - radical substitution - pyrolysis
Acetylene
anti conformation
propionaldehyde
26. What are the best leaving groups?
weak bases
geometric isomers
chiral center
alkyne
27. Kmno4
geminal
electrophilic addition of X2
optical activity
potassium permanganate
28. Zn/h or CH3/s with ozonolysis
reducing
sigma bond
alkyne
catalytic hydrogenation
29. Transfer of electrions from one atome to another
formaldehyde
methylene
aprotic solvent
ionic bond
30. Name for ethanal
acetaldehyde
hydroboration
electrophilic addition of X2
configuration
31. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
primary carbon
halogenation
sp2
aldehyde
32. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
Alkene
markovnikov's rule
sp
alcohol
33. When boat flips
relative configuration
geminal
ring flip
ring strain
34. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
formaldehyde
alkyne
hot - acidic potassium permanganate
y- root - en -x-yne
35. Rotations cancel each other out therefore no optical activity
racemic mixture
geometric isomers
chiral center
enantiomer
36. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
chiral
stereoisomers
ring flip
oxidizing
37. Name for propanal
weak bases
markovnikov's rule
propionaldehyde
chiral center
38. Nucleus lover. electron rich species that are attracked to charged atoms
aldehyde
electrophile
nucleophile
halogenation
39. Functionality is specified by alkoxy- prefix. ROR
ethers
nonbonded strain
achiral
racemic mixture
40. Use the Greek root for the number of carbons followed by the ending - - ane
carbonyl
Alkane nomenclature
primary carbon
oxidizing
41. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
markovnikov's rule
achiral
protic solvent
anti conformation
42. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
sp3
ozonolysis
Alkyne
allyl
43. A molecule with an internal plane of symmetry
meso compound
ionic bond
electrophilic addition of X2
halogen
44. Name for mathanal
reducing
carboxylic acid
formaldehyde
hybridization
45. Highest energy no separation. or 120 separation.
Alkene
eclipsed conformation
enantiomer
ionic bond
46. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
amines
Combustion
ionic bond
electrophilic addition
47. N - l - ml - ms
quantum numbers
pi bond
sigma bond
ozonolysis
48. Share molecular formula but have different chemical and physical properties
structural isomers
molecular orbital
peroxycarboxylic acid
methylene
49. 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
geometric isomers
electrophilic addition of X2
50. No double bonds. it has the maximum number of hydrogens.
saturated hydrocarbon
not ignored
amines
propionaldehyde