Ram bought an iron shield and displayed it in balcony of his house. After a week, he observed brown deposits over it. What type of change is it? Give reason.

The brown deposits on the iron shield is known as rust.

Rusting is a Chemical change.

Explanation: Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in presence of moisture.

The chemical equation for the reaction is given below:

Iron + water + oxygen → hydrated iron(III) oxide.

 Fe    + H2O   + O2    → Fe2O3·H2O.

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Updated on: 10-Oct-2022

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