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Isomers

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

Isomer Definition

Back (Answer)

compound of same molecular formula, but different molecular structures

#2
Front (Question)

Structural/Constitutional Isomers

Back (Answer)

only thing they share is molecular formula/weights least similar of all isomers as they have different chemical and physical properties

#3
Front (Question)

Same Connectivity? Yes/No

Back (Answer)

Yes -> Stereoisomer No -> Structural Isomer

#4
Front (Question)

Require Bond Breaking to interconvert? Yes/No

Back (Answer)

Yes: Configurational No: Conformational

#5
Front (Question)

Nonsuperimpossible mirror images? Yes/No

Back (Answer)

Yes: Enantiomer No: Diasteriomer

#6
Front (Question)

Physical Properties

Back (Answer)

characteristics that don’t change composition of matter melting, boiling points, solubility, odor, color, density

#7
Front (Question)

Chemical Properties

Back (Answer)

reactivity of molecule with other molecules resulting in changes in chemical composition

#8
Front (Question)

Stereoisomers

Back (Answer)

share same molecular formula/weights, but also share same connectivity/molecular backbone

#9
Front (Question)

Conformational Isomer vs Configurational Isomer

Back (Answer)

ConFOR: differ in roation around single sigma bonds ConFI: can be interconverted only by breaking bonds

#10
Front (Question)

Of all isomers ___ are the most similar

Back (Answer)

Conformational Isomers

#11
Front (Question)

Conformational Isomer

Back (Answer)

they are same molecule but different points in their natural rotation around a single bond

#12
Front (Question)

Staggered Conformation

Back (Answer)

lowest energy state, no steric repulsion

#13
Front (Question)

Anti Conformation

Back (Answer)

for staggered where two largest groups are antiperiplanar (same plane, opposite sides)

#14
Front (Question)

Gauche Conformation

Back (Answer)

staggered conformation where the two largest groups are 60 degrees apart

#15
Front (Question)

Eclipsed Conformation

Back (Answer)

staggered with 120 degrees

#16
Front (Question)

Totally Eclipsed Conformation

Back (Answer)

staggered with 0 degrees, highest energy form, least favorable as largest groups are synperiplanar (next to each other on same plane)

#17
Front (Question)

The higher the energy of the conformation the…

Back (Answer)

less time it will stay int he conformation

#18
Front (Question)

Conformational transitions at Room/Low Temp

Back (Answer)

Room: easily overturned Low: interconversion occurs slowly due to lack of energy

#19
Front (Question)

Ring Strain

Back (Answer)

Cycloalkanes due to 3 reasons: angle strain, torsional strain and steric strain

#20
Front (Question)

Angle Strain

Back (Answer)

bond angles deviate from what they should be

#21
Front (Question)

Torsional Strain

Back (Answer)

cyclic molecules take gauche or eclipsed interactions

#22
Front (Question)

Steric/van Der Waals Strain/Repulsion

Back (Answer)

nonadjacent atoms/groups compete for space common in flagpole interactions for steric strain

#23
Front (Question)

Cyclohexane Conformations

Back (Answer)

Boat, twist and chair

#24
Front (Question)

Chair Conformation

Back (Answer)

most stable, lowers all 3 strains for cyclohexane