Teacher gave us homework that I really don't understand. We must write chemical reactions by which we differentiate alcohols, esters, hydrogenic carbon,carboxylic acid and halogen alkanes from each other. We must not write the same reaction for two different compounds and we must not write for example just supstitution because by looking in the test tube we don't see that supstitution is happening we must write which physical change have happened,something which we can identify by just looking :(

Question

And we must write that for all of the compounds I wrote. can you help me please, this is really important and teacher is going to mark this :(