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प्रश्न
Differentiate between a physical change and a chemical change with reference to – Energy change taking place during the respective change.
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उत्तर
| 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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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
State whether the following is physical or chemical changes.
(energy produced) dissolving sugar in water —
State whether the following is physical or chemical changes.
mixing oil with water —
True or false
Is the process of digestion a physical change?
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Give a reason why
Freezing of water is a reversible change while burning of a candle – an irreversible change.
Name the following.
The product obtained during a physical change when water converts from a liquid into a solid.
Stretching gold coin into a ring is a ______ change.
Distinguish physical and chemical changes.
