Question

Name the substance formed on the surface of iron, silver and copper due to corrosion.

Answer 1

The substance formed on the surface of iron , silver , copper due to their oxides corrosion is, sulphide formation

o Iron: Iron when exposed to atmosphere it gets corrodes corroded to form iron oxide on its surface

 o Silver: Silver is known to be resistant to corrosion, as it does not get oxidized easily. When silver is exposed to air, a layer of silver sulfide is formed on the surface.

o Copper: Copper corrosion is the corrosion of materials made of copper or copper alloys. When exposed to the atmosphere, copper oxidizes, causing causes bright copper surfaces to tarnish.

Answer 2

Explanation:

Iron - Rust

Silver - Silver sulphide

Copper - Basic copper carbonate