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प्रश्न
Which of the following are physical changes and which are chemical changes ?
Freezing of water
पर्याय
Physical change
Chemical change
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उत्तर
Freezing of water – Physical change
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संबंधित प्रश्न
Classify the following changes as physical or chemical:-boiling
The rusting of an iron object is called :
Classify the following as a physical or a chemical change.
Butter getting rancid
Classify the following as a physical or a chemical change.
Melting of wax
Differentiate between a physical change and a chemical change with reference to – Formation of products.
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
Is a change of state of matter – a physical or a chemical change. Give reasons.
Potassium chloride is added to water and stirred. A salt solution is obtained, which is then boiled, leaving behind a residue.
- Is the above change physical or chemical?
- Name the residue which remains behind after the salt solution is boiled.
- Is the change reversible or not reversible?
- Are the composition and properties of the original substance altered?
- Give a reason why the above experimentation would not be possible if calcium carbonate was taken in place of potassium chloride.
Give a reason why rusting of iron is a chemical change but, the magnetization of iron is a physical change.
Select the chemical changes from the following list of changes
Change of seasons
