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NCERT solutions for class 6 science chapter 6:Change Around Us

Explore our comprehensive NCERT Solutions for Class 6 Science Chapter 6: Changes Around Us. This chapter focuses on different types of changes, including physical and chemical changes, and the factors that lead to these transformations. Our well-structured answers help students grasp the significance of these changes in nature and everyday life. Perfect for reinforcing classroom lessons and exam readiness, these solutions provide clarity on complex concepts.

Exercise Question

Question 1

To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?

Answer 1

Yes, we can reverse this change by unfolding the dress .

Question 2

You accidentally dropped your favourite toy and broke it. This is a change you did not want. Can this change be reversed?

Answer 2

No, it cannot be reversed. It is an irreversible change.

Question 3

Some changes are listed in the following table. For each change, write in the blank column, whether the change can be reversed or not.

S. No.	Change	Can be reversed (Yes/ No)
1	The sawing of a piece of wood
2	The melting of ice candy
3	Dissolving sugar in water
4	The cooking of food
5	The ripening of a mango
6	Souring of milk

Answer 3

S. No.	Change	Can be reversed (Yes/ No)
1	The sawing of a piece of wood	No
2	The melting of ice candy	Yes
3	Dissolving sugar in water	Yes
4	The cooking of food	No
5	The ripening of a mango	No
6	Souring of milk	No

Question 4

A drawing sheet changes when you draw a picture on it. Can you reverse this change?

Answer 4

It may be reversible and irreversible depends on situations
(a) if we draw with the help of pencil, we can erase the drawing by using an eraser. Then, it is a reversible change. (b)If we draw using a pen, we cannot erase the drawing. Then it is irreversed.

Question 5

Give examples to explain the difference between changes that can or cannot be reversed.

Answer 5

Question 6

A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilized. Can the change in POP be reversed?

Answer 6

When we added water in paste of Plaster of Paris , it undergoes a chemical change.Since in chemical change composition converted into another substance. So, it is cannot be reversed.

Question 7

A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?

Answer 7

Beacuse of water cement get hardens and its composition changes means it undergoes a chemical change. Chemical changes, are irreversible changes. So, cannot be reversed.

Our NCERT Solutions for Class 6 Science Chapter 6 offer essential insights into various changes in matter and their implications. Continue your journey through our other chapters and educational resources to build a solid foundation in science.