Cracking and alkenes

• define the term ‘cracking’


  breaking hydrocarbons down to produce smaller, more useful molecules
• name 2 methods of cracking

  catalytic, steam
• what are the conditions needed for cracking

  high temperature + catalyst
• which are more reactive: alkanes or alkenes?

  alkenes
• what is the test for alkenes

  bromine water; orange to colourless