Organic Chemistry
Memory Challenge – Day 2
Nomenclature of Alkanes
1. When naming alkanes, what is the most
important rule to follow?
a) You name the parent alkane based on the number of branches.
b) You name the parent alkane based on the longest continuous
straight-chain of carbon atoms.
c) You name the parent alkane based on the longest continuous chain
of carbon atoms.
d) You name the alkane making sure to give each branch the lowest
number possible.
2. The ending of a molecule that contains a
triple bond in the parent chain would be:
a)
b)
c)
d)
“-iple”
“-ane”
“-ene”
“-yne”
3. The correct diagram for the molecule
3-ethyl-3-methylhexane is:
a)
c)
b)
d)
4. What is the name of this organic molecule:
a)
b)
c)
d)
4-ethyl-4-propylhexane
4-ethyl-5-methylhexane
3-ethyl-2-methylhexane
2-methyl-3-ethylhexane
5. The prefixes used for organic molecules that
have parent chains made up of 3,4 and 5 carbon
atoms would be:
a)
b)
c)
d)
tri-, tetra-, pentaprop-, but-, pentatria-, quad-, quinttri-, quarto-, penta-
And the Answers Are…
1. When naming alkanes, what is the most
important rule to follow?
a) You name the parent alkane based on the number of branches.
b) You name the parent alkane based on the longest continuous
straight-chain of carbon atoms.
c) You name the parent alkane based on the longest continuous
chain of carbon atoms.
d) You name the alkane making sure to give each branch the lowest
number possible.
2. The ending of a molecule that contains a
triple bond in the parent chain would be:
a)
b)
c)
d)
“-iple”
“-ane”
“-ene”
“-yne”
3. The correct diagram for the molecule
3-ethyl-3-methylhexane is:
a)
c)
b)
d)
4. What is the name of this organic molecule:
a)
b)
c)
d)
4-ethyl-4-propylhexane
4-ethyl-5-methylhexane
3-ethyl-2-methylhexane
2-methyl-3-ethylhexane
5. The prefixes used for organic molecules that
have parent chains made up of 3,4 and 5 carbon
atoms would be:
a)
b)
c)
d)
tri-, tetra-, pentaprop-, but-, pentatria-, quad-, quinttri-, quarto-, penta-