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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. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
electrophilic addition
chiral center
Vinyl
primary carbon
2. Diol with hydroxyl group on same carbon
aprotic solvent
geminal
2^n
lindlar's catalyst
3. Zn/h or CH3/s with ozonolysis
enantiomer
molecular orbital
electrophilic addition
reducing
4. 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
nonbonded strain
carbonyl
catalytic hydrogenation
stereoisomers
5. Steps of free radical substitution
achiral
initiation propagation termination
sp3
aldehyde
6. Functionality is specified by alkoxy- prefix. ROR
ethers
protic solvent
ozonolysis
peroxycarboxylic acid
7. Spatial arrangement of the atoms or groups of a sterioisomer
vicinal
sp
configuration
halogen
8. Di - tri - t - sec - n -
racemic mixture
electrophilic addition
methylene
Ignored
9. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
electrophilic addition
Combustion
initiation propagation termination
oxidation
10. One s and two p 120 degree apart
mcpba
polymerization
alkyne
sp2
11. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
polymerization
achiral
triple bond
configuration
12. 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
polymerization
allyl
hydroboration
halogen
13. Lowest priority group projects into the page
polymerization
eclipsed conformation
fischer projection
C3H8 + 5O2 = 3CO2 + 4H2O + heat
14. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
ketone
hydroboration
electrophilic addition of X2
ionic bond
15. Most favorable of staggared conformations
electrophilic addition of free radicals
anti conformation
Ignored
electrophilic addition
16. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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17. Carbon double bonded to an oxygen
Combustion
carbonyl
molecular orbital
eclipsed conformation
18. 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
ketone
lindlar's catalyst
enantiomer
electrophilic addition of X2
19. Name for ethanal
structural isomers
meso compound
ozonolysis
acetaldehyde
20. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
cold potassium permanganate
diastereomers
electrophilic addition of X2
ozonolysis
21. Most similar. same molecule only at different points in their rotation. show them with newmans projections
chiral center
ozonolysis
conformational isomer
catalytic hydrogenation
22. Methyl are 60 degrees apart. kinda stable
Alkane
chiral
gauche conformation
Haloalkane
23. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
sp3
stereoisomers
achiral
diol
24. N - l - ml - ms
fischer projection
halogenation
reducing
quantum numbers
25. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
sigma bond
relative configuration
markovnikov's rule
26. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
isomer
potassium permanganate
propionaldehyde
geometric isomers
27. How many stereoisomers can a molecule have with n chiral centers
geometric isomers
eclipsed conformation
2^n
Haloalkane
28. When boat flips
torsional strain
Acetylene
ring flip
diol
29. Two hydroxyl groups
pyrolysis
alcohol
electrophile
diol
30. Rotations cancel each other out therefore no optical activity
enantiomer
ozonolysis
racemic mixture
Alkene
31. Carbon with four different substituents and lack a plane of symmetry
Vinyl
aprotic solvent
chiral center
Alkane
32. F - CL - Br - I
Vinyl
electrophilic addition
molecular orbital
halogen
33. When two atomic orbitals combine. obtained mathematically by adding or subtracting wave functions. if sings are the same - make bonding - if different - less stable antibonding.
molecular orbital
halogen
ketone
2^n
34. Share molecular formula but have different chemical and physical properties
structural isomers
polymerization
conformational isomer
absolute configuration
35. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
vicinal
electrophilic addition of H2O
quantum numbers
specific rotation
36. M - chloroperoxybenzoic acid
geometric isomers
sigma bond
mcpba
formaldehyde
37. Is bonded to only one other carbon atom
eclipsed conformation
quantum numbers
achiral
primary carbon
38. Diols with hydroxyl group on adjacent carbon
ketone
molecular orbital
gauche conformation
vicinal
39. Compounds with halogen
Alkane nomenclature
relative configuration
Haloalkane
fischer projection
40. Common name for ethyne
Ignored
Acetylene
hybridization
electrophilic addition of X2
41. Name for mathanal
formaldehyde
relative configuration
ionic bond
achiral
42. What are the best leaving groups?
alcohol
amines
weak bases
conformational isomer
43. If a compound is able to rotate plane polarized light.
optical activity
ketone
electrophilic addition of H2O
Alkane
44. Highest energy no separation. or 120 separation.
Alkane nomenclature
molecular orbital
eclipsed conformation
cold potassium permanganate
45. Combustion reaction occurs through a radical process
configuration
ethers
C3H8 + 5O2 = 3CO2 + 4H2O + heat
ionic bond
46. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
covalent bond
pi bond
Ignored
electrophilic addition of H2O
47. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
racemic mixture
halogen
aprotic solvent
stereoisomers
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
protic solvent
combustion - disproportionation - free - radical substitution - pyrolysis
eclipsed conformation
nonbonded strain
49. O3
ozonolysis
carboxylic acid
ketone
catalytic hydrogenation
50. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
ozonolysis
racemic mixture
absolute configuration
C3H8 + 5O2 = 3CO2 + 4H2O + heat