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A change in which the substance can get back to its original form is called a physical change. Which of the following is a physical change?
- a)Burning of paper
- b)Bursting of crackers
- c)Cooking of food
- d)Melting of ice
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A change in which the substance can get back to its original form is c...
Physical change is a change in which nothing new is formed. It is a change which only affects the form of a substance, but not it's chemical composition. Such kind of change is reversible. For example melting of ice, freezing of water etc.
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A change in which the substance can get back to its original form is c...
Understanding Physical Change
A physical change is a transformation that alters the form or appearance of a substance but does not change its chemical composition. This means that the original substance can be recovered after the change.
Examples of Changes
- Burning of Paper: This is a chemical change. When paper burns, it transforms into ash, smoke, and gases, making it impossible to revert to its original state.
- Bursting of Crackers: This is also a chemical change. The explosion results in new substances being formed, such as gases and heat, which cannot be returned to their original form.
- Cooking of Food: This is a chemical change as well. Cooking alters the chemical structure of the food, creating new flavors and textures that cannot be reverted to the raw ingredients.
- Melting of Ice: This is a physical change. When ice melts, it changes from a solid to a liquid (water), but its chemical composition (H2O) remains unchanged. If the water is frozen again, it can return to its original solid state.
Conclusion
The correct answer is option 'D' (Melting of ice) because it exemplifies a physical change where the substance can revert back to its original form. Understanding these distinctions helps in recognizing the nature of changes that substances undergo in everyday life.
A physical change is a transformation that alters the form or appearance of a substance but does not change its chemical composition. This means that the original substance can be recovered after the change.
Examples of Changes
- Burning of Paper: This is a chemical change. When paper burns, it transforms into ash, smoke, and gases, making it impossible to revert to its original state.
- Bursting of Crackers: This is also a chemical change. The explosion results in new substances being formed, such as gases and heat, which cannot be returned to their original form.
- Cooking of Food: This is a chemical change as well. Cooking alters the chemical structure of the food, creating new flavors and textures that cannot be reverted to the raw ingredients.
- Melting of Ice: This is a physical change. When ice melts, it changes from a solid to a liquid (water), but its chemical composition (H2O) remains unchanged. If the water is frozen again, it can return to its original solid state.
Conclusion
The correct answer is option 'D' (Melting of ice) because it exemplifies a physical change where the substance can revert back to its original form. Understanding these distinctions helps in recognizing the nature of changes that substances undergo in everyday life.
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A change in which the substance can get back to its original form is called a physical change. Which of the following is a physical change?a)Burning of paperb)Bursting of crackersc)Cooking of foodd)Melting of iceCorrect answer is option 'D'. Can you explain this answer?
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