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प्रश्न
Classify the following as physical or chemical changes :
- Cooking of food
- Boiling of water
- Cutting of trees
- D0issolving salt in water
- Digestion of food
- Melting of ice
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उत्तर
- Cooking of food – Chemical change
- Boiling of water – Physical change
- Cutting of trees – Physical change
- Dissolving salt in water – Physical change
- Digestion of food – Chemical change
- Melting of ice- Physical change
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संबंधित प्रश्न
Explain why burning of wood and cutting it into small piece are considered as two different types of changes.
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How do you say that the process of digestion is a chemical change ?
Write true or false
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Write true or false
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Classify the following as a physical or a chemical change.
Melting of wax
Fill in the blank.
The process of a liquid changing into a solid is called ________
Fill in the blank with the appropriate word of the statement given below:
Germination of seeds is considered a __________ change.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
