Akenes

• Alkenes form what kind of series?

  Homologous
• What characteristics do all homologous series, including alkenes, share?

  • Same general formula
  • Differ by CH2 in molecular formulae
  • Gradual variation in physical properties
  • Similar chemical properties
• What is the general formula for alkenes?

  CnH2n
• If an alkene molecule contains ten carbon atoms, what is its molecular formula?

  C10H20
• Hexene contains six carbon atoms, what is its molecular formula?

  C6H12
• What are isomers?

  Molecules with the same formula, different structure
• But-1-ene and but-2-ene are isomers, what differs between them?

  Position of their C=C bond
• Alkenes are classified as what type of hydrocarbons?

  Unsaturated
• Why are alkenes classified as hydrocarbons?

  They contain hydrogen and carbon only
• What is the defining characteristic of unsaturated hydrocarbons?

  They contain a C=C double bond
• What is the functional group in alkenes?

  C=C double bond
• What is a homologous series?

  A series of compounds with similar structure
• In isomer names like but-1-ene, what does the number '1' indicate?

  Location of the double bond
• What type of reaction is characteristic of alkenes due to their C=C bond?

  Addition