Rusting of an article made up of iron is called

Options

A. corrosion and it is a physical as well as chemical change.
B. dissolution and it is a physical chane
C. corrosion and it is a chemical change
D. dissolution and it is a chemical change

Explanation

**Step-by-Step Solution:**

1. **Understanding Rusting**: Rusting is a process that occurs when iron reacts with oxygen and moisture in the environment. This process leads to the deterioration of the iron material.

2. **Chemical Reaction**: The rusting of iron can be represented by the chemical reaction:
\[ 4Fe + 3O_2 + 6H_2O \rightarrow 4Fe(OH)_3 \]
This can further dehydrate to form hydrated ferric oxide, commonly known as rust.

3. **Identifying the Type of Change**: Rusting results in the formation of a new compound (hydrated ferric oxide), which indicates that a chemical change has occurred. In a chemical change, the original substances are transformed into different substances.

4. **Conclusion**: Therefore, rusting of iron is classified as corrosion, which is a type of chemical change.

5. **Final Answer**: The rusting of an article made up of iron is called **corrosion** and it is a **chemical change**.

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