'********** structural transformation 'An acid and a base can have a reaction. <(*,acid,base) --> reaction>. 2 'Acid can react with base. ''outputMustContain(' (/,reaction,_,base)>. %1.00;0.90%') 'A base is something that has a reaction with an acid. ''outputMustContain(' (/,reaction,acid,_)>. %1.00;0.90%')