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प्रश्न
What will you take into account while identifying the following?
A physical change in a substance.
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उत्तर
Physical changes are those changes in which only the forms of substances get modified; the chemical natures and compositions of the substances involved are not altered.
Characteristics:
- No new substance is formed during a physical change.
- Most physical changes can be reversed easily.
- The chemical composition of a substance undergoing physical change remains the same.
संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Classify the following as chemical or physical change:
Making a fruit salad with raw fruits
Classify the following as chemical or physical change:
Burning of paper and wood
State three differences between evaporation and boiling
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
What is a physical change ? Give two examples of physical changes.
Distinguish between the following.
Physical change and chemical change
State whether the following statement is true or false. If false write the correct statement.
Melting of ice is an exothermic, irreversible chemical change.
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
The change of state of a substance from solid to liquid and liquid to gas is ______.
