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Exhibitor Jong Son a , Jo Min yong the second year of Shinsung junior high
school Ulsan metropolitan city
Prize A minister prize Ministry of Science & Technology
Exhibiting subject How does Copper change chemically ?
Substance of
an exhibition
A Copper makes a black and blue rust when materials is reacting on
soluble in water. A Copper is smaller than Hydrogen ionization
tendency so it is not reacting on direct Hydrochloric aid,Sulfuric aid,
Acetic acid. But if there is an oxidize like peroxide of Hydrogen is
reacting. Oxygen, the constituent parts of atmospherical makes
Copper change. If it has touched big metal ionization tendency more
than copper and copper in an aqueous solution of acetic acid, As
metal was oxidized keeping off oxidation reaction of Copper. Take
metal in an aqueous solution sulfuric acid of copper we know quantity
with Copper about ionization tendency of metal
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