we know about the metal, but when metal came in contact with air it can corrosive. do you know Why did metal corrosive? So let's know.
When we put
metal in the open air, it soon begins to
worsen. The air contains
oxygen, carbon dioxide, sulfur, acid, etc. The reaction with which gets layer on the metal. Due to this layer, the original luster of
metal appears to be overhauled. It's Called metal
corrosion. On the iron, the oxygen reaction in the air, and the air make a brown-colored layer on the
metal. It's Called iron
corrosion. When
copper coins, utensils, etc react to carbon dioxide in the air due to it makes the layer of copper carbonate and copper color get worse. This process is called copper
corrosion. Thus, the
air gets worse the metal.
Gold is also a metal, but it does not get
worse in contact with air, because it does not react with gas like oxygen, carbon dioxide in the air.so gold does not get
worse, but if
gold is washed with acid it can get
worse and it is
Sheen can also
lose.
