Lawrie Ryan and Roger Norris Solutions for Chapter: Hydrocarbons, Exercise 7: Question

Name the first member of homologous series of alkenes. 

Give the molecular formula of alkene containing $18$ carbon atoms and one $\mathrm{C}=\mathrm{C}$ bond.

Write the word equation for an example of cracking ${\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_8{\mathrm{CH}}_3\underset{\mathrm{heat}}{\overset{{\mathrm{Al}}_2{\mathrm{O}}_3}{\to }}{\mathrm{CH}}_3{\left({\mathrm{CH}}_2\right)}_4{\mathrm{CH}}_3+{\mathrm{CH}}_2=\mathrm{CH}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

Write a balanced equation to show the cracking of nonane into heptane and ethene. 

Discuss and suggest why 'alkenes are more reactive than alkanes'. Think about whether electrophiles or nucleophiles would attack alkenes and explain your choice.