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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 carbon triple bonds. Suffix-yne.
formaldehyde
polymerization
Alkyne
molecular orbital
2. Methyl are 60 degrees apart. kinda stable
enantiomer
gauche conformation
saturated hydrocarbon
hybridization
3. Spatial arrangement of the atoms or groups of a sterioisomer
meso compound
configuration
acetaldehyde
racemic mixture
4. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
achiral
geometric isomers
racemic mixture
oxidation
5. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
enantiomer
Alkene
lindlar's catalyst
electrophilic addition of free radicals
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
protic solvent
electrophilic addition of free radicals
carbonyl
electrophilic addition
7. 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-
conformational isomer
propionaldehyde
amines
Combustion
8. 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.
ethers
hot - acidic potassium permanganate
nonbonded strain
stereoisomers
9. 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
amines
disproportionation
catalytic hydrogenation
eclipsed conformation
10. Refers to the =CH2 group
Haloalkane
methylene
weak bases
carbonyl
11. Is bonded to only one other carbon atom
mcpba
primary carbon
stereoisomers
peroxycarboxylic acid
12. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
carboxylic acid
carbonyl
absolute configuration
optical activity
13. N - l - ml - ms
quantum numbers
Acetylene
ring flip
eclipsed conformation
14. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
sigma bond
aldehyde
peroxycarboxylic acid
oxidation
15. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
carboxylic acid
achiral
primary carbon
Acetylene
16. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
racemic mixture
hybridization
cold potassium permanganate
electrophilic addition of X2
17. Functionality is specified by alkoxy- prefix. ROR
ethers
nonbonded strain
racemic mixture
C3H8 + 5O2 = 3CO2 + 4H2O + heat
18. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
ionic bond
allyl
reducing
electrophilic addition of HX
19. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
ionic bond
Alkyne
electrophilic addition of H2O
sigma bond
20. Most similar. same molecule only at different points in their rotation. show them with newmans projections
carboxylic acid
conformational isomer
hydroboration
stereoisomers
21. What are the best leaving groups?
sp
oxidation
weak bases
ring strain
22. One s and two p 120 degree apart
anti conformation
disproportionation
sp2
acetaldehyde
23. One s and three p orbitals
chiral
sp3
chiral center
enantiomer
24. Lowest priority group projects into the page
disproportionation
reducing
fischer projection
anti conformation
25. Diols with hydroxyl group on adjacent carbon
configuration
relative configuration
molecular orbital
vicinal
26. What is produced when o3 with lialh4 or nabh4
sp
alcohol
Alkene
reducing
27. Carbon double bonded to an oxygen
optical activity
carbonyl
halogen
cold potassium permanganate
28. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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29. Rotations cancel each other out therefore no optical activity
specific rotation
racemic mixture
torsional strain
mcpba
30. Zn/h or CH3/s with ozonolysis
y- root - en -x-yne
disproportionation
diol
reducing
31. Transfer of electrions from one atome to another
ionic bond
acetaldehyde
diol
weak bases
32. Hydrocarbon with one or more carbon carbon triple bond
disproportionation
potassium permanganate
alkyne
alcohol
33. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
alkyne
ozonolysis
configuration
potassium permanganate
34. M - chloroperoxybenzoic acid
oxidizing
mcpba
molecular orbital
hybridization
35. Carbon with four different substituents and lack a plane of symmetry
chiral center
covalent bond
fischer projection
configuration
36. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
specific rotation
potassium permanganate
disproportionation
optical activity
37. Arise from angle strain - torsional strian and nonbonded strain
molecular orbital
aprotic solvent
configuration
ring strain
38. How many stereoisomers can a molecule have with n chiral centers
vicinal
absolute configuration
potassium permanganate
2^n
39. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
relative configuration
geminal
electrophile
potassium permanganate
40. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
ring strain
2^n
sp
Alkene
41. 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
mcpba
pyrolysis
anti conformation
Alkane
42. Same molecular formula but different structure
isomer
triple bond
torsional strain
enantiomer
43. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
geometric isomers
structural isomers
peroxycarboxylic acid
polymerization
44. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
markovnikov's rule
diastereomers
ozonolysis
stereoisomers
45. No double bonds. it has the maximum number of hydrogens.
peroxycarboxylic acid
carbonyl
triple bond
saturated hydrocarbon
46. Highest energy no separation. or 120 separation.
peroxycarboxylic acid
Acetylene
eclipsed conformation
cold potassium permanganate
47. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
acetaldehyde
oxidizing
halogen
electrophilic addition of X2
48. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
polymerization
oxidizing
methylene
combustion - disproportionation - free - radical substitution - pyrolysis
49. A molecule with an internal plane of symmetry
meso compound
fischer projection
electrophilic addition
vicinal
50. Most favorable of staggared conformations
anti conformation
y- root - en -x-yne
isomer
ozonolysis