chemisty

chemisty

1. tests for gases

   • carbon dioxide~ limewater
   • oxygen~ glowing splint
   • chlorine~ turns litmus paper red.
   • hydrogen~ squeky pop
   • ammonia~ litmus paper turn blue.
   • water~ turns cobalt chloride paper pink

2. crude oil and fractional distilation

   • when fuel burns oxides of sulphur form
   • crude oil
     • plants
     • sea creatures
     • animal poo
   • consists of hydrogen and carbon
   • alkanes are saturated hydrocarbons
   • separate crude oil by distillation
     • separates liquids with different boiling points

3. alternative fuels

   • biodiesel
   • biof