Organic Chemistry

• What is a hydrocarbon?

  A compound with only hydrogen and carbon
• What is crude oil?

  • remaining biomass of living organisms (plankton)
• What is combustion?

  • A hydrocarbon reacts with oxygen
  • Releases lots of energy
• What are the properties of a long chain hydrocarbon?

  • Low flammability
  • High boiling point
  • Very thick
• What are the properties of a low chain hydrocarbon?

  • High flammability
  • Low bouling point
  • Very runny
• What are the first four alkanes?

  • Methane
  • Ethane
  • Propane
  • Butane
• What is the formula of an alkane?

  C(n)H(2n+2)
• What is the order of fractional distillation (going up)

  • Residue
  • Diesel oil
  • Kerosene
  • Gasoline
  • Petroleum gas
• What's the difference between alkene and alkanes?

  Alkenes have a double bond between carbon atoms
• How can you tell the difference between alkenes and alkanes

  • Mix with bromine water
  • If it turns colourless, an alkene is present
• What are the two methods of cracking?

  • Catalytic cracking
  • Vapourise hydrocarbon & pass them over a hot catalyst
  •  Steam Cracking
  • mix hydrocarbons with steam at a very high temperature