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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. 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.
oxidizing
not ignored
nonbonded strain
hydroboration
2. No double bonds. it has the maximum number of hydrogens.
saturated hydrocarbon
halogen
configuration
electrophilic addition of H2O
3. Nucleus lover. electron rich species that are attracked to charged atoms
alkyne
nucleophile
conformational isomer
chiral
4. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
anti conformation
oxidation
polymerization
isomer
5. A molecule with an internal plane of symmetry
meso compound
primary carbon
formaldehyde
protic solvent
6. 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-
electrophilic addition
stereoisomers
covalent bond
amines
7. 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
angle strain
saturated hydrocarbon
Alkene
8. Results when cyclic molecules must assume conformations that have eclipsed interactions
cold potassium permanganate
racemic mixture
combustion - disproportionation - free - radical substitution - pyrolysis
torsional strain
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
catalytic hydrogenation
ethers
electrophilic addition of free radicals
mcpba
10. A = observed rotation / concentration * length
acetaldehyde
geminal
specific rotation
anti conformation
11. Carbonyl located in middle or somewhere in chane. Named with One
ketone
meso compound
sigma bond
chiral center
12. O3
enantiomer
optical activity
nucleophile
ozonolysis
13. 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
peroxycarboxylic acid
pyrolysis
catalytic hydrogenation
14. 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
Vinyl
configuration
racemic mixture
15. When bond angles deviate from ideal values
acetaldehyde
angle strain
hybridization
Combustion
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.
diastereomers
propionaldehyde
allyl
polymerization
17. Monosubstituted ethylene
Vinyl
ionic bond
combustion - disproportionation - free - radical substitution - pyrolysis
fischer projection
18. What are the best leaving groups?
propionaldehyde
hydroboration
weak bases
triple bond
19. Hydrocarbon with one or more carbon carbon triple bond
alcohol
C3H8 + 5O2 = 3CO2 + 4H2O + heat
alkyne
diastereomers
20. Most similar. same molecule only at different points in their rotation. show them with newmans projections
Alkane nomenclature
conformational isomer
Acetylene
diol
21. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
basicity
racemic mixture
aprotic solvent
primary carbon
22. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
C3H8 + 5O2 = 3CO2 + 4H2O + heat
diastereomers
oxidizing
23. If a compound is able to rotate plane polarized light.
electrophilic addition
optical activity
ozonolysis
angle strain
24. Charged - need electrons
catalytic hydrogenation
enantiomer
electrophile
nucleophile
25. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
mcpba
carboxylic acid
2^n
gauche conformation
26. Not solvated
relative configuration
sigma bond
aprotic solvent
alcohol
27. Chain of carbons connected by single bonds with hydrogen atoms attached.
Alkane
Haloalkane
polymerization
methylene
28. Common name for ethyne
Acetylene
sp2
relative configuration
hybridization
29. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
hot - acidic potassium permanganate
geometric isomers
hybridization
molecular orbital
30. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
fischer projection
Acetylene
electrophilic addition of HX
oxidizing
31. 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
geminal
disproportionation
pyrolysis
optical activity
32. A sigma bond and two pi bonds
oxidation
isomer
electrophilic addition of free radicals
triple bond
33. Alphabetical order of alkane rxn
primary carbon
combustion - disproportionation - free - radical substitution - pyrolysis
nucleophile
structural isomers
34. M - chloroperoxybenzoic acid
Haloalkane
absolute configuration
ketone
mcpba
35. Formed by mixing different types of orbitals
hybridization
ring flip
diol
electrophilic addition of free radicals
36. If reagent has a bunch of oxygen
sp
protic solvent
propionaldehyde
oxidation
37. Functionality is specified by alkoxy- prefix. ROR
oxidation
ethers
oxidizing
sp3
38. Lowest priority group projects into the page
eclipsed conformation
fischer projection
lindlar's catalyst
diastereomers
39. Is bonded to only one other carbon atom
primary carbon
sp3
aprotic solvent
fischer projection
40. Di - tri - t - sec - n -
electrophilic addition of X2
carboxylic acid
Ignored
C3H8 + 5O2 = 3CO2 + 4H2O + heat
41. 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
nonbonded strain
protic solvent
hot - acidic potassium permanganate
isomer
42. Spatial arrangement of the atoms or groups of a sterioisomer
meso compound
configuration
Alkane
sp
43. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
geometric isomers
methylene
ethers
saturated hydrocarbon
44. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
pi bond
electrophilic addition of X2
configuration
Ignored
45. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
enantiomer
configuration
quantum numbers
markovnikov's rule
46. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
Acetylene
relative configuration
ionic bond
markovnikov's rule
47. Use the Greek root for the number of carbons followed by the ending - - ane
pyrolysis
Alkane nomenclature
halogen
optical activity
48. Carbon carbon triple bonds. Suffix-yne.
nonbonded strain
absolute configuration
enantiomer
Alkyne
49. Same molecular formula but different structure
conformational isomer
methylene
isomer
halogen
50. What is produced when o3 with lialh4 or nabh4
electrophilic addition
alcohol
enantiomer
potassium permanganate