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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. Highest energy no separation. or 120 separation.
conformational isomer
propionaldehyde
eclipsed conformation
Alkane nomenclature
2. Refers to the =CH2 group
combustion - disproportionation - free - radical substitution - pyrolysis
triple bond
methylene
racemic mixture
3. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
quantum numbers
ozonolysis
conformational isomer
nucleophile
4. Zn/h or CH3/s with ozonolysis
reducing
combustion - disproportionation - free - radical substitution - pyrolysis
nonbonded strain
disproportionation
5. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
y- root - en -x-yne
sp
nucleophile
configuration
6. 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
aprotic solvent
electrophilic addition of HX
gauche conformation
catalytic hydrogenation
7. 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.
ketone
enantiomer
diastereomers
sp
8. Functionality is specified by alkoxy- prefix. ROR
2^n
hot - acidic potassium permanganate
ethers
specific rotation
9. Most similar. same molecule only at different points in their rotation. show them with newmans projections
formaldehyde
hot - acidic potassium permanganate
primary carbon
conformational isomer
10. How many stereoisomers can a molecule have with n chiral centers
2^n
hot - acidic potassium permanganate
electrophilic addition of X2
geometric isomers
11. Share molecular formula but have different chemical and physical properties
structural isomers
sigma bond
sp
Alkane
12. If reagent has a bunch of oxygen
specific rotation
achiral
oxidation
alkyne
13. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
oxidizing
hybridization
fischer projection
halogenation
14. Most favorable of staggared conformations
halogenation
aldehyde
anti conformation
weak bases
15. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
ozonolysis
polymerization
isomer
electrophilic addition of HX
16. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
pi bond
geminal
Acetylene
geometric isomers
17. Diol with hydroxyl group on same carbon
Ignored
covalent bond
geminal
aldehyde
18. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
pi bond
nonbonded strain
electrophilic addition of free radicals
oxidizing
19. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
cold potassium permanganate
markovnikov's rule
combustion - disproportionation - free - radical substitution - pyrolysis
sp2
20. A = observed rotation / concentration * length
hydroboration
conformational isomer
specific rotation
ring flip
21. When bond angles deviate from ideal values
angle strain
hydroboration
electrophilic addition of H2O
hot - acidic potassium permanganate
22. 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
molecular orbital
mcpba
pyrolysis
configuration
23. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
triple bond
carboxylic acid
not ignored
racemic mixture
24. When boat flips
torsional strain
Alkane
ring flip
mcpba
25. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
aldehyde
protic solvent
catalytic hydrogenation
Alkane
26. Alphabetical order of alkane rxn
electrophilic addition of free radicals
angle strain
y- root - en -x-yne
combustion - disproportionation - free - radical substitution - pyrolysis
27. Name for ethanal
sp
oxidation
acetaldehyde
nucleophile
28. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
alcohol
y- root - en -x-yne
catalytic hydrogenation
molecular orbital
29. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
saturated hydrocarbon
enantiomer
anti conformation
vicinal
30. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
diastereomers
ozonolysis
absolute configuration
aprotic solvent
31. A sigma bond and two pi bonds
triple bond
relative configuration
hydroboration
alcohol
32. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
gauche conformation
basicity
electrophilic addition of H2O
protic solvent
33. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
weak bases
saturated hydrocarbon
carbonyl
oxidizing
34. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
relative configuration
conformational isomer
ring strain
meso compound
35. Arise from angle strain - torsional strian and nonbonded strain
protic solvent
oxidation
ring strain
specific rotation
36. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
peroxycarboxylic acid
aprotic solvent
oxidation
geometric isomers
37. Carbonyl located in middle or somewhere in chane. Named with One
electrophilic addition
optical activity
diol
ketone
38. Object that is not superimposable upon mirror image
geometric isomers
chiral
nucleophile
quantum numbers
39. Hydrocarbon with one or more carbon carbon triple bond
lindlar's catalyst
aldehyde
alkyne
eclipsed conformation
40. Charged - need electrons
oxidation
peroxycarboxylic acid
electrophile
sp3
41. 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
hot - acidic potassium permanganate
cold potassium permanganate
allyl
basicity
42. M - chloroperoxybenzoic acid
polymerization
mcpba
acetaldehyde
angle strain
43. Methyl are 60 degrees apart. kinda stable
carbonyl
alkyne
gauche conformation
ozonolysis
44. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
carbonyl
stereoisomers
isomer
pi bond
45. Carbon carbon triple bonds. Suffix-yne.
Alkyne
ionic bond
Acetylene
optical activity
46. A molecule with an internal plane of symmetry
electrophilic addition of HX
meso compound
Alkane
weak bases
47. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
isomer
stereoisomers
catalytic hydrogenation
hot - acidic potassium permanganate
48. One s and two p 120 degree apart
pi bond
hydroboration
y- root - en -x-yne
sp2
49. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
ring flip
achiral
electrophile
hydroboration
50. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
chiral
sigma bond
halogenation
quantum numbers