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प्रश्न
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
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उत्तर
chemical change,
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संबंधित प्रश्न
Write true or false for the statement
Decomposition of leaves is a fast change.
State four differences between physical and chemical changes.
True or false
In a physical change no net energy change is involved.
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
Classify the following as a physical or a chemical change.
Butter getting rancid
Ice kept in a beaker, slowly melts and turns into water. The water in the beaker on solidification is freezing turns back to ice. Give four reasons why the change from ice to water and water back to ice is considered a physical change.
Name the following:
The term involved in the change of state from – ‘water to ice’ – which is a physical change.
Give a reason why
Freezing of water is a reversible change while burning of a candle – an irreversible change.
Give two examples for the following case:
Physical changes which are not reversible
Keeping a stone in sunlight for few hours is ______.
