Question

Rusting of iron is an example of chemical change.

• A. True
• B. False

Answer 1

The correct option is A True

Chemical change:

• A change in which one or more new substances are formed is called a chemical change.
• A chemical change is also called a chemical reaction.
• Chemical changes are irreversible and permanent.

Example- Rusting iron, magnesium ribbon burning, souring of milk, etc.

Rusting of iron:

• In this change, iron reacts with water and air and produces new substance rust.
• Hence rusting of iron is an example of chemical change.
• The chemical equation for rusting of iron is
• $$\begin{gathered} 4\mathrm{Fe}\left(\mathrm{s}\right)+3{\mathrm{O}}_2\left(\mathrm{g}\right)+{\mathrm{xH}}_2\mathrm{O}\left(\mathrm{aq}\right)\to 2{\mathrm{Fe}}_2{\mathrm{O}}_3.{\mathrm{xH}}_2\mathrm{O}\left(\mathrm{s}\right) \\ \mathrm{Iron}\mathrm{Oxygen}\mathrm{Water}\mathrm{Rust} \end{gathered}$$
• So, rusting of iron is an example of chemical change.

Thus, the given statement is true.