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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. Carbon with four different substituents and lack a plane of symmetry
chiral center
cold potassium permanganate
relative configuration
not ignored
2. Iso - neo - cyclo
sigma bond
geometric isomers
not ignored
ketone
3. Most similar. same molecule only at different points in their rotation. show them with newmans projections
hot - acidic potassium permanganate
2^n
conformational isomer
initiation propagation termination
4. Results when cyclic molecules must assume conformations that have eclipsed interactions
C3H8 + 5O2 = 3CO2 + 4H2O + heat
torsional strain
allyl
gauche conformation
5. A molecule with an internal plane of symmetry
alkyne
sigma bond
meso compound
configuration
6. Alphabetical order of alkane rxn
sp
electrophile
combustion - disproportionation - free - radical substitution - pyrolysis
optical activity
7. A sigma bond and two pi bonds
triple bond
stereoisomers
ketone
enantiomer
8. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
sigma bond
Alkane nomenclature
relative configuration
Alkyne
9. When boat flips
electrophilic addition of X2
Vinyl
ring flip
polymerization
10. Chain of carbons connected by single bonds with hydrogen atoms attached.
Alkane
halogenation
Ignored
propionaldehyde
11. How many stereoisomers can a molecule have with n chiral centers
reducing
ring strain
polymerization
2^n
12. Transfer of electrions from one atome to another
chiral center
hydroboration
acetaldehyde
ionic bond
13. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
ethers
chiral center
carboxylic acid
stereoisomers
14. Object that is not superimposable upon mirror image
Vinyl
chiral
meso compound
allyl
15. Use the Greek root for the number of carbons followed by the ending - - ane
angle strain
sp
Alkane nomenclature
basicity
16. Name for propanal
peroxycarboxylic acid
propionaldehyde
formaldehyde
angle strain
17. Diols with hydroxyl group on adjacent carbon
ring flip
polymerization
structural isomers
vicinal
18. Monosubstituted ethylene
Vinyl
allyl
electrophilic addition
initiation propagation termination
19. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
oxidation
basicity
mcpba
y- root - en -x-yne
20. Combustion reaction occurs through a radical process
vicinal
combustion - disproportionation - free - radical substitution - pyrolysis
C3H8 + 5O2 = 3CO2 + 4H2O + heat
electrophilic addition of X2
21. Formed by mixing different types of orbitals
enantiomer
Alkane
hybridization
geometric isomers
22. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
Alkene
propionaldehyde
polymerization
Vinyl
23. Refers to the =CH2 group
methylene
oxidizing
electrophilic addition of X2
alkyne
24. Share molecular formula but have different chemical and physical properties
structural isomers
hybridization
carbonyl
triple bond
25. N - l - ml - ms
ethers
ring flip
quantum numbers
protic solvent
26. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
achiral
electrophilic addition of H2O
sp2
catalytic hydrogenation
27. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
sp2
eclipsed conformation
hydroboration
sp
28. 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.
aprotic solvent
ketone
molecular orbital
eclipsed conformation
29. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
not ignored
anti conformation
stereoisomers
alcohol
30. 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
ring flip
protic solvent
enantiomer
sigma bond
31. Compounds with halogen
ring strain
Haloalkane
enantiomer
geometric isomers
32. Carbon carbon triple bonds. Suffix-yne.
potassium permanganate
acetaldehyde
Alkyne
alcohol
33. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ozonolysis
Vinyl
initiation propagation termination
alcohol
34. Sharing of electron between atoms
ring strain
pyrolysis
electrophilic addition of HX
covalent bond
35. One s and two p 120 degree apart
triple bond
oxidation
Haloalkane
sp2
36. No double bonds. it has the maximum number of hydrogens.
saturated hydrocarbon
enantiomer
torsional strain
disproportionation
37. Arise from angle strain - torsional strian and nonbonded strain
halogenation
ozonolysis
aprotic solvent
ring strain
38. F - CL - Br - I
optical activity
triple bond
primary carbon
halogen
39. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Haloalkane
Combustion
C3H8 + 5O2 = 3CO2 + 4H2O + heat
electrophilic addition of free radicals
40. Functionality is specified by alkoxy- prefix. ROR
specific rotation
Ignored
ethers
structural isomers
41. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
mcpba
y- root - en -x-yne
electrophilic addition
Alkyne
42. Diol with hydroxyl group on same carbon
geminal
diol
hot - acidic potassium permanganate
catalytic hydrogenation
43. Name for ethanal
primary carbon
electrophile
acetaldehyde
relative configuration
44. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
electrophilic addition of X2
vicinal
alkyne
aldehyde
45. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
geminal
specific rotation
pi bond
torsional strain
46. M - chloroperoxybenzoic acid
mcpba
electrophilic addition of free radicals
electrophilic addition
peroxycarboxylic acid
47. Nucleus lover. electron rich species that are attracked to charged atoms
angle strain
specific rotation
nucleophile
Ignored
48. If reagent has a bunch of oxygen
torsional strain
sigma bond
oxidation
stereoisomers
49. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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50. 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
ethers
peroxycarboxylic acid
Ignored