# 1Multiple Choice
What is the general molecular formula for alkenes?
CₙH₂ₙ
CₙHₙ+₂
CₙH₂ₙ+₂
CₙHₙ
chemistry
Samuella
Sequencing
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Others
chemistry
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Original quiz maker-
Samuella
College
Others
chemistry
4
Original quiz maker-
Samuella
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# 2Multiple Choice
Where is the double bond located in terminal alkenes?
At the end of the chain
In the middle of the chain
At the beginning of the chain
At the end of the ring
# 3Multiple Choice
What shape are the carbon atoms in alkenes due to hybridization?
Linear
Tetrahedral
Trigonal planar
Bent
# 4Multiple Choice
Which type of bond in alkenes is weaker and more easily broken?
Sigma (σ) bond
Pi (π) bond
Both are equally weak
None of the above
# 5Multiple Choice
At room temperature, what state are the first four members of alkenes usually in?
Solid
Liquid
Gas
Plasma
# 6Multiple Choice
How does increasing the number of carbon atoms in an alkene affect its boiling point?
Decreases
No change
Increases
Varies randomly
# 7Multiple Choice
What term describes alkenes with the double bond at the ring's end?
Open-chain alkenes
Cycloalkenes
Alkenols
Aromatics
# 8Multiple Choice
In IUPAC naming, how is the position of the double bond indicated?
By the number of the first carbon
By the total number of carbons
By the length of the chain
By the number of double bonds
# 9Multiple Choice
What are the two common alkenyl groups mentioned?
Methyl and ethyl
Vinyl and allyl
Phenyl and benzyl
Carboxyl and hydroxyl
# 10Multiple Choice
Which is generally more stable: cis- or trans-alkenes?
Cis-
Trans-
Both equally
Neither
# 11Multiple Choice
What is the term for alkenes with groups on the same side of the double bond?
Trans-isomers
Cis-isomers
E-isomers
Z-isomers
# 12Multiple Choice
What does the (E) in E/Z designation stand for?
Same side
Opposite sides
Equal priority
Same priority
# 13Multiple Choice
Why can't cis and trans be used to describe some alkenes with more substituted double bonds?
Because of symmetry
Because of ambiguity in substitution
Because they are not double bonds
Because they are rings
# 14Multiple Choice
In the CIP system, what determines the priority of groups attached to the double bond?
Atomic number
Molecular weight
Size of group
Position in the molecule
# 15Multiple Choice
What is the IUPAC name for a compound with a double bond between carbons 2 and 3 in a pentene chain?
2-Pentene
3-Pentene
1-Pentene
2,3-Pentadiene
# 16Multiple Choice
What is the main reason trans-alkenes are more stable than cis-alkenes?
Less steric hindrance
More bonds
Higher energy
More reactive
# 17Multiple Choice
Which of the following is an example of a cis-alkene?
Both methyl groups on the same side
Methyl groups on opposite sides
No double bond
A ring structure
# 18Multiple Choice
What is the main feature that distinguishes alkenes from alkanes?
Double bond
Triple bond
Ring structure
Presence of oxygen
# 19Multiple Choice
How does the presence of a double bond affect the rotation around the carbon-carbon bond?
Allows free rotation
Restricts rotation
Has no effect
Makes the bond shorter
# 20Multiple Choice
What is the physical state of most small alkenes at room temperature?
Solid
Liquid
Gas
Plasma
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