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प्रश्न
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
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उत्तर
The crystallisation of salt from its solution is a PHYSICAL change as only state changes (crystals are formed), the composition does not change, is reversible, no change in mass takes place.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Boiling of water to form steam.
Try segregating the things around you as pure substances or mixtures.
Write short answer.
What are man-made changes ?
State four differences between physical and chemical changes.
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
Classify the Following as a Physical Or a Chemical Change.
Curdling of Milk
Fill in the blank with the appropriate word of the statement given below:
Germination of seeds is considered a __________ change.
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
Higher order Thinking question
Boiling of water is a physical change; but boiling of egg is a chemical change. Why?
Adding sugar to milk is a physical change.
