Final answer:
This answer provides the structural formulas for the four smallest alkanes and alkenes, along with their names.
Step-by-step explanation:
7. Alkanes:
Alkanes are hydrocarbons with single bonds between carbon atoms. The four smallest alkanes are methane (CH4), ethane (C2H6), propane (C3H8), and butane (C4H10).
Methane (CH4):
Ethane (C2H6):
Propane (C3H8):
Butane (C4H10):
8. Alkenes:
Alkenes are hydrocarbons with at least one carbon-carbon double bond. The four smallest alkenes are ethene (C2H4), propene (C3H6), butene (C4H8), and pentene (C5H10).
Ethene (C2H4):
Propene (C3H6):
Butene (C4H8):
Pentene (C5H10):