WBCS.LIVE practice question
Which of the following is an example of a 'Chemical Change'?
Solve this multiple-choice question and check the correct answer with its explanation below.
Answer options
Correct answer and explanation
Correct answer: Rusting of Iron
Explanation: ā Correct Answer: (C) Rusting of Iron š Explanation: A chemical change occurs when a substance combines with another to form a new substance. Rusting of iron (oxidation) is a chemical change because iron reacts with oxygen and moisture to form iron oxide, a completely new chemical compound. Physical changes, like melting or boiling, only change the state or appearance of the substance without changing its chemical composition. Rusting is usually irreversible, which is a common characteristic of chemical changes.