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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. Zn/h or CH3/s with ozonolysis
sp
fischer projection
initiation propagation termination
reducing
2. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
electrophilic addition of H2O
sigma bond
diol
halogen
3. M - chloroperoxybenzoic acid
2^n
enantiomer
basicity
mcpba
4. Transfer of electrions from one atome to another
methylene
meso compound
chiral
ionic bond
5. Lowest priority group projects into the page
fischer projection
isomer
reducing
weak bases
6. Sharing of electron between atoms
y- root - en -x-yne
ring flip
electrophilic addition of H2O
covalent bond
7. Diols with hydroxyl group on adjacent carbon
protic solvent
not ignored
amines
vicinal
8. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
vicinal
sp2
meso compound
achiral
9. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
ring flip
stereoisomers
enantiomer
catalytic hydrogenation
10. 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
Ignored
racemic mixture
allyl
reducing
11. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
fischer projection
achiral
absolute configuration
y- root - en -x-yne
12. When bond angles deviate from ideal values
allyl
configuration
anti conformation
angle strain
13. How many stereoisomers can a molecule have with n chiral centers
2^n
halogenation
achiral
electrophilic addition of free radicals
14. Arise from angle strain - torsional strian and nonbonded strain
ring strain
aldehyde
covalent bond
hybridization
15. Goal is to produce most stable carbocation
16. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
carboxylic acid
weak bases
quantum numbers
Combustion
17. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
geometric isomers
electrophilic addition of HX
peroxycarboxylic acid
electrophilic addition of H2O
18. Not solvated
Alkane
peroxycarboxylic acid
aprotic solvent
pyrolysis
19. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
Haloalkane
nonbonded strain
Vinyl
electrophilic addition
20. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
catalytic hydrogenation
oxidation
hydroboration
hot - acidic potassium permanganate
21. Rotations cancel each other out therefore no optical activity
halogen
potassium permanganate
oxidizing
racemic mixture
22. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
nucleophile
vicinal
stereoisomers
absolute configuration
23. Results when cyclic molecules must assume conformations that have eclipsed interactions
torsional strain
aldehyde
angle strain
Alkyne
24. Two hydroxyl groups
diol
alkyne
mcpba
electrophile
25. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
hydroboration
mcpba
lindlar's catalyst
Vinyl
26. Carbon double bonded to an oxygen
carbonyl
markovnikov's rule
nonbonded strain
sp
27. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
molecular orbital
aldehyde
geometric isomers
ionic bond
28. What is produced when o3 with lialh4 or nabh4
reducing
oxidizing
alcohol
ozonolysis
29. Same molecular formula but different structure
potassium permanganate
electrophilic addition of HX
ozonolysis
isomer
30. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
oxidizing
reducing
ketone
mcpba
31. 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
oxidizing
markovnikov's rule
ring flip
32. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
molecular orbital
Acetylene
conformational isomer
cold potassium permanganate
33. N - l - ml - ms
carbonyl
acetaldehyde
nonbonded strain
quantum numbers
34. 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
electrophile
fischer projection
pyrolysis
protic solvent
35. Most favorable of staggared conformations
sp2
anti conformation
sp
electrophile
36. If a compound is able to rotate plane polarized light.
nucleophile
alkyne
optical activity
configuration
37. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
carboxylic acid
pyrolysis
formaldehyde
propionaldehyde
38. When boat flips
allyl
ring flip
diol
Alkane
39. Methyl are 60 degrees apart. kinda stable
meso compound
gauche conformation
torsional strain
anti conformation
40. Hydrocarbon with one or more carbon carbon triple bond
chiral
chiral center
alkyne
nonbonded strain
41. Kmno4
potassium permanganate
enantiomer
electrophilic addition of HX
meso compound
42. No double bonds. it has the maximum number of hydrogens.
propionaldehyde
geometric isomers
initiation propagation termination
saturated hydrocarbon
43. Name for mathanal
markovnikov's rule
not ignored
formaldehyde
C3H8 + 5O2 = 3CO2 + 4H2O + heat
44. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ozonolysis
gauche conformation
disproportionation
electrophilic addition of HX
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
racemic mixture
halogenation
electrophilic addition of free radicals
ketone
46. Steps of free radical substitution
methylene
Ignored
mcpba
initiation propagation termination
47. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
markovnikov's rule
racemic mixture
y- root - en -x-yne
sp
48. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
weak bases
configuration
fischer projection
49. A sigma bond and two pi bonds
hydroboration
cold potassium permanganate
triple bond
Haloalkane
50. Alphabetical order of alkane rxn
diol
isomer
combustion - disproportionation - free - radical substitution - pyrolysis
relative configuration