Final answer:
Hydrocarbons such as 3-methyloctane and heptane are classified as saturated, while others such as cyclopentene and heptyne are classified as unsaturated due to the presence of double or triple bonds.
Step-by-step explanation:
The question involves categorizing each hydrocarbon as being saturated or unsaturated:
- 3-methyloctane is a saturated hydrocarbon, specifically an alkane with a branched chain.
- cyclopentene is an unsaturated hydrocarbon due to the presence of a carbon-carbon double bond, making it an alkene.
- propane is a saturated hydrocarbon, an alkane with a straight chain.
- heptyne is an unsaturated hydrocarbon because it has a triple bond in its chain, thus it's an alkyne.
- heptane is a saturated hydrocarbon, an alkane with a straight chain.