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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. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
triple bond
relative configuration
methylene
electrophilic addition of free radicals
2. Common name for ethyne
reducing
carbonyl
Acetylene
cold potassium permanganate
3. Transfer of electrions from one atome to another
electrophilic addition of H2O
pyrolysis
initiation propagation termination
ionic bond
4. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
absolute configuration
allyl
nonbonded strain
relative configuration
5. Rotations cancel each other out therefore no optical activity
geometric isomers
halogen
racemic mixture
absolute configuration
6. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
halogenation
initiation propagation termination
sp2
protic solvent
7. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
peroxycarboxylic acid
Combustion
not ignored
basicity
8. A = observed rotation / concentration * length
pyrolysis
Alkyne
hot - acidic potassium permanganate
specific rotation
9. 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
electrophilic addition of H2O
oxidizing
gauche conformation
pyrolysis
10. No double bonds. it has the maximum number of hydrogens.
saturated hydrocarbon
electrophilic addition of HX
fischer projection
nucleophile
11. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
racemic mixture
chiral
electrophilic addition of HX
peroxycarboxylic acid
12. If a compound is able to rotate plane polarized light.
eclipsed conformation
conformational isomer
optical activity
electrophilic addition
13. Carbon carbon triple bonds. Suffix-yne.
Ignored
angle strain
Alkyne
hydroboration
14. Name for mathanal
formaldehyde
ring flip
combustion - disproportionation - free - radical substitution - pyrolysis
ring strain
15. A sigma bond and two pi bonds
ring flip
catalytic hydrogenation
triple bond
sp2
16. 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
carboxylic acid
specific rotation
geometric isomers
enantiomer
17. What are the best leaving groups?
electrophilic addition of X2
peroxycarboxylic acid
y- root - en -x-yne
weak bases
18. Kmno4
weak bases
potassium permanganate
pi bond
ozonolysis
19. Alphabetical order of alkane rxn
enantiomer
Alkene
2^n
combustion - disproportionation - free - radical substitution - pyrolysis
20. Name for ethanal
acetaldehyde
catalytic hydrogenation
carboxylic acid
pyrolysis
21. When boat flips
y- root - en -x-yne
electrophile
allyl
ring flip
22. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
oxidation
Alkyne
sp
triple bond
23. Nucleus lover. electron rich species that are attracked to charged atoms
nucleophile
primary carbon
angle strain
halogen
24. A molecule with an internal plane of symmetry
meso compound
electrophilic addition of HX
ketone
formaldehyde
25. Most similar. same molecule only at different points in their rotation. show them with newmans projections
molecular orbital
ionic bond
conformational isomer
basicity
26. Methyl are 60 degrees apart. kinda stable
fischer projection
gauche conformation
alcohol
reducing
27. Results when cyclic molecules must assume conformations that have eclipsed interactions
configuration
torsional strain
polymerization
ring flip
28. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Combustion
carboxylic acid
Ignored
enantiomer
29. If reagent has a bunch of oxygen
oxidation
nucleophile
Combustion
alcohol
30. Monosubstituted ethylene
Vinyl
propionaldehyde
halogenation
Alkane nomenclature
31. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
absolute configuration
Alkene
conformational isomer
reducing
32. Functionality is specified by alkoxy- prefix. ROR
ring flip
formaldehyde
ethers
ozonolysis
33. M - chloroperoxybenzoic acid
peroxycarboxylic acid
mcpba
hybridization
specific rotation
34. O3
ozonolysis
Combustion
gauche conformation
conformational isomer
35. Object that is not superimposable upon mirror image
hybridization
pyrolysis
chiral
diastereomers
36. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
2^n
Alkane nomenclature
electrophilic addition of X2
formaldehyde
37. Charged - need electrons
structural isomers
electrophile
fischer projection
conformational isomer
38. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
markovnikov's rule
Combustion
hydroboration
absolute configuration
39. 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
ketone
aldehyde
formaldehyde
40. Highest energy no separation. or 120 separation.
chiral center
eclipsed conformation
Alkane nomenclature
combustion - disproportionation - free - radical substitution - pyrolysis
41. Name for propanal
chiral center
propionaldehyde
ethers
potassium permanganate
42. 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
nonbonded strain
allyl
aldehyde
Combustion
43. Iso - neo - cyclo
carbonyl
Vinyl
chiral
not ignored
44. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
electrophilic addition
absolute configuration
fischer projection
specific rotation
45. Refers to the =CH2 group
methylene
carboxylic acid
ring flip
propionaldehyde
46. Spatial arrangement of the atoms or groups of a sterioisomer
lindlar's catalyst
molecular orbital
2^n
configuration
47. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
optical activity
stereoisomers
alkyne
enantiomer
48. Lowest priority group projects into the page
specific rotation
fischer projection
sp2
cold potassium permanganate
49. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
ketone
basicity
molecular orbital
protic solvent
50. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
allyl
electrophilic addition of HX
electrophilic addition of H2O
ozonolysis