2. Structural isomers are molecules that have
the same molecular formula but different
arrangements of atoms.
Parent chain: the longest chain of carbon
atoms
Methyl: a chain of one carbon atom coming
off the parent chain
3. Pentane has five
carbon atoms and
twelve hydrogen
atoms. 2-methyl butane also
has five carbon atoms
and twelve hydrogen
atoms.
2-methyl butane has a
parent chain of four
carbon atoms.
It has a parent chain of
five carbon atoms.
It has a methyl group
on the second carbon
atom.
4. This molecule is
2,2-dimethyl
propane.
It has a parent
chain of three
carbon atoms.
2,2-dimethyl
propane has two
methyl groups
coming from the
second carbon
atom.
5. Structural Isomer 1
is called 1-Butene
because the double
bond starts on the
first carbon atom.
Structural Isomer 2
is called 2-Butene
because the double
bond starts on the
second carbon
atom.
6. They have
different
names.
It is
essential to They have
understand different
shapes
structural
isomers. They react
differently
with other
substances.
