Question

What chemical action in metals exposed to air and water is called

Answer 1

Answer:

Rusting.

Rusting is the chemical action in metals exposed to air and water.It forms a brownish-red or light green coloured layer.It is also known as Corrossion.

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Answer 2

Answer:

Corrosion is the formation of metal oxide when exposed to moist air. Rust is iron oxide. Corrosion occurs in the presence of moisture. For example, when an iron is exposed to moist air, it reacts with oxygen to form rust(Fe2O3 .