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Question
Differentiate between a physical change and a chemical change with reference to – Energy change taking place during the respective change.
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Solution
| Physical change | Chemical change |
| Generally, energy is neither absorbed nor released during the change. | Generally, energy is either absorbed or evolved during change. |
| Example: Melting of ice, melting of the wax. | Example: Change of milk into curd and burning of a candle. |
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RELATED QUESTIONS
Write true or false for the statement
A natural change can also be a desirable change
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| Column A | Column B |
| 1. a change which cannot be easily reversed | a. man-made change |
| 2 a change that repeats itself at regular intervals | b. chemical chang |
| 3. a change that is made by humans | c. physical change |
| 4. a change in which the original substance cannot be obtained | d. periodic change |
| 5. a change where no new substance is formed | e. irreversible change |
| f . slow change |
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