When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both chemical and physical changes take place.
ScienceClass 7CBSEAnswered 27 Mar 2026
Answer
Solution:
Candle Burning
Physical change is the melting of the wax.
The chemical change is the burning of gas with the evolution of CO2.
Digestion of Food
Physical change is the breakdown of larger food molecules into simpler ones.
The chemical change is the digestion of food by the action of HCl and enzymes.
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