chem group 1 data

Part II.
Set-up A (one nail bent, other unbent)
After 10 min
Unbent – little blue spots at the pointed end; little blue spots at the edge of the head
Bent – medium whitish spot at both the pointed end and head; very small blue spot at pointed end
After one day
Unbent – edge of the nail outlined with blue
Bent – pointed end thickly covered with blue
Set-up B (one with Cu, one with Zn)
After 10 min
Cu – head lined with blue at the edges; pointed end, covered with white, lined with blue
Zn – very little white spots
After one day
Cu – both tips heavily covered with blue (looks like cotton buds)
Zn – small blue and white spots on the part covered with Zn metal