Question

1. Draw the structural formula of 2-methylbut-2-ene. 
2. Bromine water was added to 2-methylbut-2-ene
   1. State mark the observation made.  
   2. Name the type of the reaction that took place. 

Answer 1

1. 
   
2.  
   1. Bromine water is decolorised.
      Orange/brown/yellow bromine turns to colorless
   2. Addition reaction.