What can a change in smell show in a chemical reaction?
Answer and explanation
Correct answer: A new substance may be formed
A change in smell can indicate that a new substance with different properties has formed during the reaction. A change of state alone, such as freezing or boiling of water, does not usually form a new substance. Exam tip: Change in colour or smell, temperature change, gas evolution, and precipitate formation are common signs of a chemical reaction.
Frequently asked questions
What is the correct answer to this question?
A new substance may be formed
Why is this the correct answer?
A change in smell can indicate that a new substance with different properties has formed during the reaction. A change of state alone, such as freezing or boiling of water, does not usually form a new substance. Exam tip: Change in colour or smell, temperature change, gas evolution, and precipitate formation are common signs of a chemical reaction.
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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