Alkenes and Alkynes Worksheet and Key
Draw the structures of the alkenes, cyclic alkenes, and alkynes that contain 4 carbon atoms:
a. alkenes:
b. cycloalkenes:
c. alkynes:
1. Draw the structural formula, the condensed structural formula, and the skeletal formula for
1-pentene.
Structural formula:
Condensed structural formula:
Skeletal formula:
2. Draw the structural formula, the condensed structural formula, and the skeletal formula for
2-pentene.
Structural formula:
Condensed structural formula:
Skeletal formula:
3. Draw the structural formula, the condensed structural formula, and the skeletal formula for
2-methyl-3-heptene.
Structural formula:
Condensed structural formula:
Skeletal formula:
4. Draw the structural formula, the condensed structural formula, and the skeletal formula for
3,3-diethyl-1-octyne.
Structural formula:
Condensed structural formula:
Skeletal formula:
5. What is the systematic name for the following structure?
6. What is the systematic name for the following structure?
Alkenes and Alkynes Worksheet Key
Draw the structures of the alkenes, cyclic alkenes, and alkynes that contain 4 carbon atoms:
a. alkene (3 possible):
b. cycloalkene (3 possible):
=
or
c. alkyne (2 possible)
or
1. Draw the structural formula, the condensed structural formula, and the skeletal formula for 1-pentene.
Structural formula:
H
H
H H
H
│
│
│ │
│
H ― C ═ C ― C― C ― C―H
│ │
│
H H
H
Condensed structural formula:
CH2═ CHCH2CH2CH3
Skeletal formula:
2. Draw the structural formula, the condensed structural formula, and the skeletal formula for 2-pentene.
Structural formula:
H H
H
H
H
│ │
│
│
│
H ― C ― C ═ C ― C ― C ―H
│
│
│
H
H
H
Condensed structural formula:
CH3CH═ CHCH2CH3
Skeletal formula:
3. Draw the structural formula, the condensed structural formula, and the skeletal formula for 2-methyl-3heptene.
Structural formula:
Condensed structural formula:
CH3
│
CH3CHCH═CHCH2CH2CH3
Skeletal formula:
4. Draw the structural formula, the condensed structural formula, and the skeletal formula for
3,3-diethyl-1-octyne.
Structural formula:
Condensed structural formula:
CH2CH3
│
CH≡ CCCH2CH2CH2CH2CH3
│
CH2CH3
Skeletal formula:
5. What is the systematic name for the following structure?
5-methyl-2-heptene
6. What is the systematic name for the following structure?
2-pentyne