Question

Write 'true' or 'false' against the following statement. Rusting of iron is a chemical change.

Answer 1

Hint: To answer this question, we must first comprehend the distinction between physical and chemical change, as well as the concept of iron rusting. Then we must evaluate the properties of iron rusting in order to get at a correct solution among the available possibilities, and only then can we arrive at the correct answer.

Complete answer:
Let us first learn some basic ideas before moving further with the solution to this provided question:
1. Physical changes: a substance's appearance, not its chemical composition, is altered.
2. Chemical changes: transforming a material into a new one having a different chemical formula.
3. Rusting of Iron: Rusting refers to the creation of rust on the surface of iron objects or structures, which is a mixture of iron oxides. In a water-rich environment, rust is created through a redox interaction between oxygen and iron (or high levels of moisture). The creation of a layer of a red, flaky substance that quickly crumbles into a powder characterises the rusting of iron.
Because rusting occurs as a result of a chemical interaction between iron and air in the presence of moisture, it is a chemical alteration. The iron would not have rusted and gained a brown texture from its dull grey one if the chemical interaction between them had not occurred. As a result, a new substance known as rust forms on the surface of Iron.
Hence the above mentioned statement is true.

Note:
It should be noted that surface plating is the process of depositing nickel or chromium on a surface. Nickel and chrome are not prone to corrosion since they do not contain iron. Surface plating is a more complicated anti-corrosion treatment, but it protects iron from rusting quite well.