Which of the following is only a physical change?
Answer and explanation
Correct answer: Water freezing into ice
Freezing of water is a change of state. Water changes from a liquid to a solid, but its chemical composition remains [1mH₂O[0m and no new substance is formed. Therefore, it is a physical change. In contrast, curd formation, rusting of iron, and burning magnesium produce new substances, so they are chemical changes.
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What is the correct answer to this question?
Water freezing into ice
Why is this the correct answer?
Freezing of water is a change of state. Water changes from a liquid to a solid, but its chemical composition remains [1mH₂O[0m and no new substance is formed. Therefore, it is a physical change. In contrast, curd formation, rusting of iron, and burning magnesium produce new substances, so they are chemical changes.
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.
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