NCERT Solutions for Class 6 Science Chapter 6 Changes around us

Edited By Irshad Anwar | Updated on Oct 03, 2023 08:36 PM IST

NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us

NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us: Solutions for Chapter "Changes Around Us" are part of NCERT Solutions for Class 6 Science . 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 lives. Class 6 science chapter 6 question answer covers all major concepts of the chapter. 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? You will get questions and answers based on these concepts in the changes around us Class 6 solutions. In this article, you will get NCERT solutions for class 6 science chapter 6 changes around us.

In NCERT Class 6 Science Solutions for Chapter 6 Changes Around Us, you will get the answers to all these questions. First, read this changes around us Class 6 carefully and solve every problem in NCERT on your own. If you are having difficulties answering these questions, you can take the help of NCERT solutions for Class 6 Science Chapter 6 changes around us. Check out NCERT Solutions from Classes 6 to 12 to learn Science and Maths. Students can refer to this link for NCERT Solutions for Class 6.

NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us

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NCERT Solutions 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: 2 You accidentally dropped your favourite toy and broke it. This is a change you did not want. Can this change be reversed?

Answer: No, this change cannot 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 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 6 - Changes Around Us

Class 6 Science Chapter 6 question answer consists of a total of seven theoretical and yes/no marked questions with answers prepared by experts at Careers360. Students can download solutions for class 6 science chapter in PDF format from the website and refer to them for a better understanding of the chapter. These Solution for Class 6 chapter 6 science are accessible anytime and anywhere, making it convenient for students to use them for exam preparation.

Important Subtopics Covered in NCERT Solutions for Class 6 Science Chapter 6 Changes around Us

Important topics covered in Chapter 6 Science Class 6 "Changes Around Us" presented in bullet points:

Some common changes
Evaporation
Expansion
Melting
Contraction
Can all changes always be reversed?
Could there be other ways to bring a change?

NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us - Summary

In the NCERT Class 6 Syllabus for Science, there are many examples given which will give you more clarity about this topic.

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.

NCERT Solution for Class 6 Science Chapter 6- Topics

Can All Changes Always Be Reserved?
Could There Be Other Ways To Bring A Change?

NCERT Solutions for Class 6 Science- Chapter Wise

Chapter No.	Chapter Name
Chapter 1	Food: Where Does It Come From?
Chapter 2	Components of Food
Chapter 3	Fibre to Fabric
Chapter 4	Sorting Materials into Groups
Chapter 5	Separation of Substances
Chapter 6	Changes Around Us
Chapter 7	Getting to Know Plants
Chapter 8	Body Movements
Chapter 9	The Living Organisms Characteristics and Habitats
Chapter 10	Motion and Measurement of Distances
Chapter 11	Light, Shadows, and Reflections
Chapter 12	Electricity and Circuits
Chapter 13	Fun with Magnets
Chapter 14	Water
Chapter 15	Air Around Us
Chapter 16	Garbage In, Garbage Out

NCERT Solutions for Class 6: Subjectwise

NCERT solutions for Class 6 Maths

NCERT solutions for Class 6 Science

Also, Check NCERT Books and NCERT Syllabus here

Benefits of NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us:

Changes Around Us Class 6 Solutions are prepared in a very simple language that can be understood very easily.
Class 6 science chapter 6 question answer 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.
Changes around us Class 6 questions and answers will strengthen your fundamental concepts of science.
Changes around us Class 6 NCERT solutions will develop your logical approach and methodology towards science and other subjects.
Your homework will be easier with Class 6 changes around us NCERT solutions.

Frequently Asked Questions (FAQs)

1. What is mean by Changes Around Us?

In a fraction of a second, some changes one thing to another thing, and some changes are slow and some fast for example, the Melting of ice, the Flowering of plants, etc.

2. How many exercise questions in NCERT solution Class 6 Chapter 6?

There are 7 questions in NCERT solution Class 6 chapter 6 exercise

Also Read

NCERT Solutions for Class 6 Science Chapter 3 Fibre to Fabric

NCERT Solutions for Class 6 Science Chapter 2 Components of Food

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

NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes

NCERT Solutions for Class 6 Maths Chapter 14 Practical Geometry

NCERT Solutions for Class 6 Maths Chapter 13 Symmetry

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A block of mass 0.50 kg is moving with a speed of 2.00 ms^-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1) $0.34\; J$	Option 2) $0.16\; J$
Option 3) $1.00\; J$	Option 4) $0.67\; J$

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times. Assume that the potential energy lost each time he lowers the mass is dissipated. How much fat will he use up considering the work done only when the weight is lifted up ? Fat supplies 3.8×10⁷J of energy per kg which is converted to mechanical energy with a 20% efficiency rate. Take g = 9.8 ms⁻² :

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2.45×10⁻³ kg

Option 2)

6.45×10⁻³ kg

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9.89×10⁻³ kg

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An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1) $2,000 \; J - 5,000\; J$	Option 2) $200 \, \, J - 500 \, \, J$
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In the reaction,

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Option 1) 0.02	Option 2) 3.125 × 10^-2
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If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1) decrease twice	Option 2) increase two fold
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Option 1) Molality	Option 2) Weight fraction of solute
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Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol^-1) is

Option 1) twice that in 60 g carbon	Option 2) 6.023 × 10²²
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