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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.
acetaldehyde
Alkyne
weak bases
electrophilic addition
2. Carbonyl located in middle or somewhere in chane. Named with One
halogen
triple bond
halogenation
ketone
3. Iso - neo - cyclo
potassium permanganate
not ignored
torsional strain
initiation propagation termination
4. Chain of carbons connected by single bonds with hydrogen atoms attached.
peroxycarboxylic acid
primary carbon
amines
Alkane
5. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
halogenation
alcohol
geometric isomers
Haloalkane
6. Share molecular formula but have different chemical and physical properties
structural isomers
carboxylic acid
covalent bond
ring flip
7. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ozonolysis
sp2
Alkyne
triple bond
8. Carbon double bonded to an oxygen
oxidizing
pi bond
nucleophile
carbonyl
9. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
amines
molecular orbital
configuration
polymerization
10. O3
racemic mixture
ozonolysis
saturated hydrocarbon
stereoisomers
11. Steps of free radical substitution
diol
initiation propagation termination
y- root - en -x-yne
protic solvent
12. One s and two p 120 degree apart
mcpba
sp2
carbonyl
triple bond
13. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Vinyl
pi bond
polymerization
Combustion
14. Results when cyclic molecules must assume conformations that have eclipsed interactions
torsional strain
Combustion
peroxycarboxylic acid
electrophilic addition of free radicals
15. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
propionaldehyde
oxidation
protic solvent
cold potassium permanganate
16. A molecule with an internal plane of symmetry
oxidation
meso compound
ethers
chiral center
17. M - chloroperoxybenzoic acid
ketone
not ignored
mcpba
sigma bond
18. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
combustion - disproportionation - free - radical substitution - pyrolysis
aldehyde
electrophilic addition of free radicals
Alkyne
19. A sigma bond and two pi bonds
triple bond
absolute configuration
chiral center
not ignored
20. Two hydroxyl groups
specific rotation
chiral center
nonbonded strain
diol
21. Zn/h or CH3/s with ozonolysis
ozonolysis
sp2
disproportionation
reducing
22. Diols with hydroxyl group on adjacent carbon
vicinal
lindlar's catalyst
pi bond
mcpba
23. Common name for ethyne
propionaldehyde
not ignored
Acetylene
chiral
24. 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
oxidizing
ozonolysis
meso compound
25. Rotations cancel each other out therefore no optical activity
racemic mixture
anti conformation
sp3
torsional strain
26. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
anti conformation
racemic mixture
achiral
specific rotation
27. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
angle strain
eclipsed conformation
absolute configuration
combustion - disproportionation - free - radical substitution - pyrolysis
28. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
protic solvent
sp2
peroxycarboxylic acid
aldehyde
29. Carbon carbon triple bonds. Suffix-yne.
chiral
Alkyne
ketone
electrophile
30. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
Alkyne
electrophilic addition of X2
sp3
lindlar's catalyst
31. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
Alkene
basicity
C3H8 + 5O2 = 3CO2 + 4H2O + heat
ethers
32. Not solvated
eclipsed conformation
aprotic solvent
torsional strain
Alkane nomenclature
33. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
pi bond
carbonyl
racemic mixture
ionic bond
34. Carbon with four different substituents and lack a plane of symmetry
covalent bond
diastereomers
chiral center
electrophilic addition of X2
35. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
y- root - en -x-yne
electrophile
peroxycarboxylic acid
stereoisomers
36. Is bonded to only one other carbon atom
diastereomers
primary carbon
molecular orbital
basicity
37. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
electrophilic addition of free radicals
structural isomers
electrophilic addition of HX
chiral center
38. What is produced when o3 with lialh4 or nabh4
Haloalkane
sp
disproportionation
alcohol
39. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
sp
enantiomer
ionic bond
saturated hydrocarbon
40. 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
lindlar's catalyst
carboxylic acid
geminal
allyl
41. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
geometric isomers
initiation propagation termination
configuration
diastereomers
42. Monosubstituted ethylene
triple bond
C3H8 + 5O2 = 3CO2 + 4H2O + heat
Vinyl
Alkane nomenclature
43. 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
enantiomer
electrophilic addition of X2
alcohol
formaldehyde
44. One s and three p orbitals
Alkyne
geminal
sp3
basicity
45. 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-
amines
potassium permanganate
Alkyne
angle strain
46. Nucleus lover. electron rich species that are attracked to charged atoms
nucleophile
carboxylic acid
Alkane
combustion - disproportionation - free - radical substitution - pyrolysis
47. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
Alkyne
oxidation
pyrolysis
stereoisomers
48. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
hydroboration
propionaldehyde
enantiomer
pi bond
49. 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.
nonbonded strain
halogenation
molecular orbital
meso compound
50. Methyl are 60 degrees apart. kinda stable
covalent bond
nucleophile
gauche conformation
Acetylene