Which of the following examples involves a change in properties and the formation of a new substance?
Answer and explanation
Correct answer: Rusting of iron
When iron rusts, it reacts with oxygen and moisture in air to form rust, a new substance with properties different from those of iron. Therefore, rusting is a chemical change. In contrast, breaking glass, folding paper, and melting ice are physical changes because no new substance is formed.
Frequently asked questions
What is the correct answer to this question?
Rusting of iron
Why is this the correct answer?
When iron rusts, it reacts with oxygen and moisture in air to form rust, a new substance with properties different from those of iron. Therefore, rusting is a chemical change. In contrast, breaking glass, folding paper, and melting ice are physical changes because no new substance is formed.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
