Year 10 Science


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Large alkanes from crude oil are broken down to give smaller molecules.  Choose the correct word from the list to complete each sentence.

 

       a     This process is called ... cracking           distillation             fermentation                                  (1)

       b     The reaction is an example of thermal... decomposition       evaporation       polymerisation        (1)

       c     The smaller alkane formed can be used as a ... plastic           monomer              fuel                    (1)

       d     The alkene will turn bromine water ... blue              colourless                orange                         (1)

       e     The general formula for an alkene is ...  CnH2n-2           CnH2n           CnH2n+2                                                 (1)



 

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