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प्रश्न
Make a list of different types of changes with example.
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उत्तर
Different types of changes are as under :
- Reversible Change e.g. Melting of ice.
- Irreversible Change e.g. Burning of paper.
- Periodic Change e.g. Swinging of pendulum.
- Non-Periodic Change e.g. Occurrence of floods.
- Desirable Change e.g. Ripening of fruits.
- Undesirable Change e.g. Rusting of Iron.
- Natural Change e.g. Changing of Seasons
- Man-Made Change e.g. Changing the direction of flow of a river by dams.
- Slow Change e.g. Growth of a plant
- Fast Change e.g. Occurrence of lightning during thunderstorm.
- Physical Change e.g. transformation of ice.
- Chemical Change e.g. curdling of milk.
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संबंधित प्रश्न
Photosynthesis cannot take place at night.
Classify the following changes as physical or chemical: curdling of milk
State the Differences Between a Physical Change and a Chemical Change.
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
What is a physical change ? Give two examples of physical changes.
Compare the energy changes involved during a physical and a chemical change.
Name the following.
The product of the chemical change in keeping a polished iron nail exposed to the atmosphere.
When a woolen yarn is knitted to get a sweater, the change can be classified as ____________.
Cutting a log of wood into pieces is a chemical change.
Explain the characteristics of physical change with examples.
