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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. If a compound is able to rotate plane polarized light.
weak bases
optical activity
Haloalkane
achiral
2. Combustion reaction occurs through a radical process
formaldehyde
geometric isomers
C3H8 + 5O2 = 3CO2 + 4H2O + heat
propionaldehyde
3. Charged - need electrons
electrophile
disproportionation
Vinyl
chiral center
4. Alphabetical order of alkane rxn
combustion - disproportionation - free - radical substitution - pyrolysis
chiral center
aldehyde
sp3
5. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
polymerization
sigma bond
electrophile
nucleophile
6. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
diastereomers
Acetylene
structural isomers
ozonolysis
7. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
halogenation
electrophilic addition
combustion - disproportionation - free - radical substitution - pyrolysis
Alkane
8. Carbon double bonded to an oxygen
meso compound
initiation propagation termination
carbonyl
pi bond
9. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
combustion - disproportionation - free - radical substitution - pyrolysis
molecular orbital
nucleophile
y- root - en -x-yne
10. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
basicity
hydroboration
geminal
oxidizing
11. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
catalytic hydrogenation
Vinyl
peroxycarboxylic acid
quantum numbers
12. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
specific rotation
eclipsed conformation
electrophilic addition of free radicals
acetaldehyde
13. One s and three p orbitals
ring strain
sp3
Combustion
oxidizing
14. Sharing of electron between atoms
covalent bond
halogenation
carboxylic acid
Alkane nomenclature
15. If reagent has a bunch of oxygen
oxidation
ring flip
mcpba
lindlar's catalyst
16. 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.
halogen
eclipsed conformation
propionaldehyde
diastereomers
17. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
electrophilic addition of H2O
achiral
ring strain
geometric isomers
18. Carbonyl located in middle or somewhere in chane. Named with One
nonbonded strain
weak bases
halogen
ketone
19. Transfer of electrions from one atome to another
ionic bond
ring strain
angle strain
aldehyde
20. N - l - ml - ms
quantum numbers
Ignored
conformational isomer
hybridization
21. How many stereoisomers can a molecule have with n chiral centers
alcohol
vicinal
2^n
acetaldehyde
22. 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
oxidation
torsional strain
nucleophile
allyl
23. 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
hydroboration
racemic mixture
electrophilic addition of free radicals
protic solvent
24. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
2^n
relative configuration
chiral
molecular orbital
25. Rotations cancel each other out therefore no optical activity
covalent bond
geometric isomers
racemic mixture
torsional strain
26. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
hot - acidic potassium permanganate
Alkane nomenclature
hydroboration
pyrolysis
27. 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.
ozonolysis
Haloalkane
nonbonded strain
electrophilic addition of free radicals
28. 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
Alkyne
pyrolysis
Vinyl
29. Is bonded to only one other carbon atom
angle strain
primary carbon
nonbonded strain
enantiomer
30. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkene
ethers
anti conformation
carbonyl
31. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
allyl
sp
polymerization
diastereomers
32. A = observed rotation / concentration * length
amines
oxidation
saturated hydrocarbon
specific rotation
33. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
diastereomers
pi bond
Combustion
geometric isomers
34. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
halogenation
ring flip
catalytic hydrogenation
sp
35. Not solvated
molecular orbital
catalytic hydrogenation
aprotic solvent
disproportionation
36. Two hydroxyl groups
diol
triple bond
ketone
ozonolysis
37. Name for ethanal
nucleophile
acetaldehyde
achiral
carboxylic acid
38. Most similar. same molecule only at different points in their rotation. show them with newmans projections
allyl
protic solvent
angle strain
conformational isomer
39. Lowest priority group projects into the page
halogen
fischer projection
pi bond
sp
40. Steps of free radical substitution
initiation propagation termination
nonbonded strain
relative configuration
anti conformation
41. A molecule with an internal plane of symmetry
saturated hydrocarbon
meso compound
aprotic solvent
weak bases
42. Monosubstituted ethylene
carboxylic acid
configuration
Vinyl
electrophile
43. Kmno4
structural isomers
halogenation
potassium permanganate
amines
44. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
peroxycarboxylic acid
absolute configuration
fischer projection
initiation propagation termination
45. Diol with hydroxyl group on same carbon
amines
nonbonded strain
geminal
primary carbon
46. No double bonds. it has the maximum number of hydrogens.
mcpba
gauche conformation
reducing
saturated hydrocarbon
47. 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.
specific rotation
aprotic solvent
methylene
molecular orbital
48. Share molecular formula but have different chemical and physical properties
anti conformation
oxidizing
formaldehyde
structural isomers
49. Nucleus lover. electron rich species that are attracked to charged atoms
conformational isomer
nucleophile
ketone
pyrolysis
50. Name for propanal
alcohol
propionaldehyde
Acetylene
ring strain