How do you do these chemistry questions i don't get them can you please help me?

1.what is the purpose of writing a word equation 2.examine the following word equation: propane+oxygen(arrow)carbon dioxide+water a)list the reactants in this reaction b)list the products in this reaction 3.for each of the following reactions,identify the type of chemical reaction and write a complete word equation to describe it. a)aluminum combines with chlorine. b)type of reaction c)word equation d)magnesium combines with aluminum chloride e)type of reaction f)word equation.Please number/letter off your answers thanks