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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.
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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. 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
triple bond
catalytic hydrogenation
achiral
combustion - disproportionation - free - radical substitution - pyrolysis
2. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
stereoisomers
pyrolysis
geometric isomers
weak bases
3. If a compound is able to rotate plane polarized light.
electrophilic addition
optical activity
pyrolysis
Alkane
4. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
aprotic solvent
basicity
oxidizing
triple bond
5. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
specific rotation
eclipsed conformation
pi bond
ethers
6. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
covalent bond
carbonyl
Alkane nomenclature
electrophilic addition of HX
7. Functionality is specified by alkoxy- prefix. ROR
Alkane
ethers
achiral
reducing
8. Sharing of electron between atoms
Alkene
Ignored
covalent bond
enantiomer
9. When bond angles deviate from ideal values
angle strain
Acetylene
covalent bond
hot - acidic potassium permanganate
10. Lowest priority group projects into the page
nonbonded strain
hot - acidic potassium permanganate
pyrolysis
fischer projection
11. 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
torsional strain
protic solvent
acetaldehyde
pyrolysis
12. Chain of carbons connected by single bonds with hydrogen atoms attached.
ring flip
electrophilic addition of free radicals
carbonyl
Alkane
13. What are the best leaving groups?
potassium permanganate
chiral center
weak bases
quantum numbers
14. One s and two p 120 degree apart
y- root - en -x-yne
Alkane
ring strain
sp2
15. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
peroxycarboxylic acid
formaldehyde
pi bond
sp
16. F - CL - Br - I
configuration
halogen
markovnikov's rule
racemic mixture
17. Alphabetical order of alkane rxn
combustion - disproportionation - free - radical substitution - pyrolysis
geometric isomers
methylene
molecular orbital
18. 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-
protic solvent
polymerization
ethers
amines
19. Nucleus lover. electron rich species that are attracked to charged atoms
methylene
covalent bond
nucleophile
angle strain
20. One s and three p orbitals
sp3
diastereomers
gauche conformation
carboxylic acid
21. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
aldehyde
configuration
acetaldehyde
sp
22. Hydrocarbon with one or more carbon carbon triple bond
alkyne
quantum numbers
pyrolysis
alcohol
23. Refers to the =CH2 group
sp2
configuration
carboxylic acid
methylene
24. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
sp
electrophilic addition of HX
Combustion
fischer projection
25. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
acetaldehyde
basicity
geometric isomers
sp
26. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
fischer projection
halogen
basicity
Alkyne
27. If reagent has a bunch of oxygen
electrophilic addition of H2O
oxidation
achiral
chiral
28. Diol with hydroxyl group on same carbon
Alkyne
oxidation
aldehyde
geminal
29. Monosubstituted ethylene
ozonolysis
enantiomer
polymerization
Vinyl
30. Steps of free radical substitution
stereoisomers
relative configuration
chiral center
initiation propagation termination
31. A molecule with an internal plane of symmetry
triple bond
saturated hydrocarbon
meso compound
optical activity
32. Carbon with four different substituents and lack a plane of symmetry
electrophilic addition of HX
anti conformation
chiral center
geometric isomers
33. Most favorable of staggared conformations
halogen
anti conformation
electrophilic addition of X2
formaldehyde
34. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
sp
carboxylic acid
triple bond
enantiomer
35. Same molecular formula but different structure
acetaldehyde
Combustion
isomer
polymerization
36. When boat flips
hybridization
sp2
amines
ring flip
37. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
basicity
sigma bond
Alkene
reducing
38. Charged - need electrons
ketone
protic solvent
electrophile
ozonolysis
39. Di - tri - t - sec - n -
specific rotation
racemic mixture
electrophilic addition of X2
Ignored
40. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
ozonolysis
hot - acidic potassium permanganate
not ignored
diol
41. M - chloroperoxybenzoic acid
angle strain
mcpba
achiral
meso compound
42. 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
initiation propagation termination
allyl
diastereomers
carboxylic acid
43. A sigma bond and two pi bonds
mcpba
markovnikov's rule
triple bond
ionic bond
44. Combustion reaction occurs through a radical process
chiral center
C3H8 + 5O2 = 3CO2 + 4H2O + heat
gauche conformation
configuration
45. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
y- root - en -x-yne
electrophilic addition of free radicals
Haloalkane
lindlar's catalyst
46. Two hydroxyl groups
anti conformation
primary carbon
diol
aprotic solvent
47. 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
racemic mixture
weak bases
Alkene
48. Compounds with halogen
chiral
covalent bond
sp3
Haloalkane
49. Name for ethanal
saturated hydrocarbon
lindlar's catalyst
alcohol
acetaldehyde
50. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
enantiomer
polymerization
chiral
Alkane