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प्रश्न
Change is the law of nature which occurs in everyday life.
State when a substance [i.e. matter] undergoes a kind of change.
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उत्तर
Change is the law of nature that occurs in everyday life. A substance [i.e. matter] undergoes a kind of change when subjected to energy changes.
The matter is said to undergo certain changes when energy is added to the matter or removed from the matter.
Examples of Changes are:
- Ice melts on supplying heat to it.
- Milk changes into curd when a little curd is added to hot milk.
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संबंधित प्रश्न
Ripening of fruits is a desirable change.
How do you say that the process of digestion is a chemical change ?
What role does energy play in initiating a chemical change ?
What are reversible and irreversible changes ? Give one example for each.
Is burning a physical change or a chemical change? Why?
Name a chemical change which takes place in presence of:
Give two examples of periodic changes.
Classify the following as a physical or a chemical change.
Butter getting rancid
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
Adding sugar to milk is a physical change.
