Question

Give one word or a phrase for each of the following.

Reddish-brown powder on the surface of iron

Answer 1

• When a metal is exposed to the atmosphere in the presence of moisture, it reacts with Oxygen and water vapor present in the air to form its oxide which tarnishes the metal surface.
• The natural process, which converts a refined metal to a more stable form, such as its oxide, hydroxide, or sulphide is known as Corrosion.
• It is the gradual destruction of materials (usual metals) by chemical and/or electrochemical reactions with their environment.
• The process of corrosion of Iron articles in the presence of damp air is known as rusting.
• During rusting of Iron, a reddish-brown flaky layer will be formed on the surface of the Iron object which is known as rust.

Concluding statement - Reddish-brown powder on the surface of iron is known as Rust.