Silver (Ag)
Tin
lens
The aluminum part of the staple is an element, but it probably has a thin plastic coating on it which is a compound.
The corrosion of metals is the gradual destruction by chemical reaction with its environment. This process involves the electrochemical oxidation of metals in reaction with an oxidant such as oxygen.
aluminum itself is an element, but most products made of aluminum are actually an aluminum alloy.both aluminum and aluminum alloys have a thin glassy (sometimes colored) coating of aluminum oxides, which protects the actual metal surface. This coating is a compound or mixture of compounds and elements.Now wasn't that complicated?
Tin.
In contact with air, calcium develops an oxide and nitride coating, which protects it from further corrosion.
Titanium and zirconium, for example, are resistant to corrosion in seawater.
The corrosion on iron can be reduced by suitable thin layer of element to be electroplated.
gold,zirconium
Not an element but the organic polymer polytetrafluoroethylene.
Not an element but the organic polymer polytetrafluoroethylene.
Tin
lens
Ways to protect metal from corrosion: 1. Galvanisation is method of protecting steel & iron from rusting by coating them with a thin layer of zinc. The galvanised article is protected against rusting even if the zinc coating is broken. 2. Painting, greasing & oiling are some commonly used methods to prevent rusting. 3. Chrome plating, anodising & making alloys are some other ways to prevent corrosion of metals.
chromium :)
You think probable that iron is sensitive to corrosion.