NCERT Solutions for Class 6 Science Chapter 6 Changes around Us

 

NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us: There are many changes like the trees are growing, the crops are changing with time, leaves are falling from trees, flowers are blooming, etc. that we see around us in our daily life. There are many changes happening in your body like the nails grow, hair grows, we grow taller and weight increases with the time. These many changes are taking place around us all the time. In this article, you will get CBSE NCERT solutions for class 6 science chapter 6 changes around us. Can all these changes always be reversed? What are the ways to bring changes? Can changes be grouped together? How can you group various changes? In solutions of NCERT for class 6 science chapter 6 changes around us, you will get the answers to all these questions. There are many examples given in the NCERT to give you more clarity.

Example1:- You must have seen the tools which are used to dig the soil. The iron blade in these tools is fixed to the wooden handle. The iron blade has a ring in which the wooden handle is to be fixed. Normally, the ring is slightly smaller in size than the size of the wooden handle. To fix the handle, the ring is heated, so that it expands and it becomes slightly larger in size. Now, the handle can be fit easily into the ring and when the ring cools down it contracts and fits tightly on to the wooden handle.

Example2:- You must have seen a potter working on his wheel. He shapes a lump of clay into a pot. Then he bakes the pot in an oven.

In example 1 you can again heat the ring, which will expand its size and you can remove the wooden handle from the ring. So, it is a reversible change. In example 2 when a potter shapes this clay into the pot which can be reversed but when he bakes pot in the oven it can't be reversed, so after baking it is an irreversible change. It this chapter there are many examples where some of the changes reversible and some are not. First, read this chapter carefully and solve every problem of NCERT on your own. If you finding the difficulties while answering these questions, you can take the help of CBSE NCERT solutions for class 6 science chapter 6 changes around us. Check NCERT Solutions from class 6 to 12 to learn science and maths.

Here are the important topics of NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us mentioned below:

6.1 Can All Changes Always Be Reversed?

6.2 Could There Be Other Ways to Bring a Change?

NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us

Solutions of NCERT for class 6 science chapter 6 changes around us-Exercises

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:

Yes this change can be reversed.

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:

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:

The answer depends on using what kind of material the drawing has been made. If it has been made using a pencil then the drawing might be erasable and the change can be reversed but if the drawing has been made using a pen or marker then the drawing is permanent and it cannot be erased and hence the change cannot be reversed.

Question:5 Give examples to explain the difference between changes that can or cannot be reversed.

Answer:

The following examples explain the differences between changes that can or cannot be reversed.

(a). A ball of clay shaped into a pot can be brought back to its original shape and therefore the change can be reversed. However if it is baked the pot thus formed cannot be changed back to soft clay and therefore the change cannot be reversed.

(b). Pieces of raw vegetables mixed together can be separated and therefore the change(the mixing) can be reversed but if we cook the vegetables they cannot be brought back to the raw state and therefore the change cannot be reversed.

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 immobilised. Can the change in POP be reversed?

Answer:

On mixing POP with water the POP reacts with water to give a different substance and this change 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:

Once cement mixes with water they both react together and the substance formed hardens and this change cannot be reversed.

NCERT Solutions for Class 6 Science- Chapter Wise

Chapter No.

Chapter Name

Chapter 1

Solutions of NCERT for Class 6 Science Chapter 1 Food: Where Does It Come From?

Chapter 2

CBSE NCERT solutions for Class 6 Science Chapter 2 Components of Food

Chapter 3

NCERT Solutions for Class 6 Science Chapter 3 Fibre to Fabric

Chapter 4

Solutions of NCERT for Class 6 Science Chapter 4 Sorting Materials into Groups

Chapter 5

CBSE NCERT solutions for Class 6 Science Chapter 5 Separation of Substances

Chapter 6

NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us

Chapter 7

Solutions of NCERT for Class 6 Science Chapter 7 Getting to Know Plants

Chapter 8

CBSE NCERT solutions for Class 6 Science Chapter 8 Body Movements

Chapter 9

NCERT solutions for Class 6 Science Chapter 9 The Living Organisms Characteristics and Habitats

Chapter 10

Solutions of NCERT for Class 6 Science Chapter 10 Motion and Measurement of Distances

Chapter 11

CBSE NCERT solutions for Class 6 Science Chapter 11 Light, Shadows, and Reflections

Chapter 12

NCERT solutions for Class 6 Science Chapter 12 Electricity and Circuits

Chapter 13

Solutions of NCERT for Class 6 Science Chapter 13 Fun with Magnets

Chapter 14

CBSE NCERT solutions for Class 6 Science Chapter 14 Water

Chapter 15

NCERT solutions for Class 6 Science Chapter 15 Air Around Us

Chapter 16

Solutions of NCERT for Class 6 Science Chapter 16 Garbage In, Garbage Out

NCERT Solutions for Class 6 - Subject- Wise

CBSE NCERT Solutions for Class 6 Maths

Solutions of NCERT for Class 6 Science

Benefits of NCERT solutions for class 6 science chapter 6 changes around us-

  • These solutions are prepared in a very simple language which can be understood very easily.
  • It will give you in-depth knowledge of your subject.
  • You can score well in the exam with the help of these NCERT solutions for class 6 science chapter 6 changes around us.
  • It will strengthen your fundamental concepts of science.
  • It will develop your logical approach and methodology towards science and other subjects.
  • Your homework will be easier with these solutions of NCERT.

Happy learning !!!

 

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