Give the IUPAC names of the following structures:

Answer:
1. 3-methylcyclopropene
2. 2-methyl-3-nonene
3. 1,4-dimethylcyclohexene
4. 4-bromo-6-chloro-7-methyl-2-nonene
5. 1-ethyl-4-isopropyl-2-methylcyclohexene