[1] no reaction - same metal [2] faint pink coating of copper [3] theoretically reacts - but doubt if you see anything [4] theoretically reacts - but doubt if you see anything [5] no reaction [6] theoretically reacts - but doubt if you see anything [0] 
aluminium film
s a l t \ m e t a l
a l u m i n i u m f i l m
c o p p e r s t r i p
i r o n f i l i n g s
l e a d s t r i p
m a g n e s i u m r i b b o n
z i n c g r a n u l e s