Hydrocarbons

1. Saturated (alkanes)
   1. Description, physical properties
   2. Important reactions
      1. Combustion
      2. Substitution reactions with halogens, etc.
   3. General principles
      1. Stability of free radicals
      2. Chain-reaction mechanism
      3. Inhibition
      4. Ring strain in cyclic compounds

2. Unsaturated (alkenes)
   1. Description
      1. Structure and isomerization
      2. Physical properties
   2. Electrophilic addition (e.g., HBr, H₂O)

3. Aromatic (benzene)
   1. Description
   2. Resonance stability, delocalization of electrons