[1] no reaction [2] You may see a pink-orange-brown-dark? layer of copper on the lead strip, blue colour fades [3] no reaction [4] no reaction - same metal [5] no reaction [6] no reaction [0] 
lead strip
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