Changes around Us NCERT Solutions - Class 6 Science

1. To walk through a waterlogged area, you usually shorten the length of your

dress by folding it. Can this change be reversed?

Ans: Yes, by unfolding the dress, which was shortened by folding. 

2. You accidentally dropped your favorite toy and broke it. This is a change you

did not want. Can this change be reversed?

Ans: No, since it is a broken toy.

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.

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

change?

Ans: Yes, we can erase the picture if it is drawn in pencil. If we used colours or sketches, we cannot erase them. 

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

Ans. Water at 0°C can be turned into solid i.e., ice and when it is put under room temperature it becomes liquid. While the burning of coal is irreversible.

6. A thick coating 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?

Ans: No, the change in Plaster of Paris (POP) cannot be reversed.

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? 

Ans: No, the change that occurred in the cement cannot be reversed.

Changes Around Us Class 6 Solutions – Free PDF Download

This sixth chapter of class 6 science deals with the concept of physical and chemical changes. Here students get a chance to comprehend the idea of how things around them are capable of a change. They can carry out some experiments to analyze the changes around us.

This chapter has three sub-topics, and all of them present a different account for the changes that occur in our surroundings every day. It begins with the changes that happen daily, and then moves on to discuss the nature of those changes.

NCERT Solutions for Class 6 Science Chapter 6 are available on Vedantu in the PDF format for students to download for free. These NCERT solutions make an essential study material that students can refer to in order to grasp the concepts covered in the chapter easily.

List of Topics Covered Under NCERT Solutions Class 6 Science - Changes around Us 

NCERT Solutions for Class 6 Science Chapter 6 Changes Around Us Topic - Wise Discussion

Class 6 Science chapter 6 has three sub-topics. Here is a topic-wise discussion on each of them.

1. Introduction

The chapter begins with a general introduction that tells about the superpowers to alter things in our surroundings. Even though it is not possible, but human beings can still influence some of them. Furthermore, it poses questions like whether students notice such changes or not, or if some of them can be grouped together, etc. Changes Around Us Class 6 NCERT prompts students to recognize these alterations carefully, and take note of them.

2. Can all Changes Always be Reversed?

The focus of this section in the NCERT Solutions class 6 Science chapter 6 is to discuss whether a change can be reversed or not.

The first activity used here asks students to blow a balloon and notice how it changes shape. Contrarily, when the air escapes this balloon, it again comes back to its previous form. This phenomenon indicates a change, which can be reversed; thus, it is called a reversible change. There are two additional activities like this, which students can perform at home to comprehend this concept better.

On the other hand, to take a cue from the previous example, students can blow a balloon and tie it up with a string. After that, use any sharp object and burst it. Now, this balloon can never alter its shape again. This type of change is regarded as an irreversible change. This section of NCERT Class 6th Science Chapter 6 comprises other activities and examples that students can follow to get a better understanding.

3. Could There be Other Ways to Bring a Change?

The second sub-topic of ch 6 Science class 6 explores different ways to bring a change other than the methods mentioned above. It begins with an explanation of how wooden handles are fixed to various tools.

Typically, the iron blades on such tools have a ring that is smaller in size compared to the handle. Now to fit it into the handle, heat is used to expand it and make it slightly larger in size. Now, this wooden handle will easily fit, and when the rings cool down, it contracts and fits tightly.

There are other similar examples that occur in our surroundings. This alteration in size due to heat is called expansion and contraction. In the presence of rising heat, substances expand in size, and in its absence, they decrease in size. However, if this temperature keeps increasing, substances will ultimately melt and evaporate.

A point to note here is that this amount of expansion and contraction varies for different solids, liquids, and gases. The NCERT Solutions for class 6th Science chapter 6 Changes Around Us covers a number of different activities and examples to aid students further to comprehend this concept.

Why NCERT Solutions is a Must Read?

Ncert Solutions is a Must-Read for Students Due to the Following Reasons.

1. NCERT Solutions for Class 6 Science Chapter 6 and other chapters, abide by the curriculum drafted by CBSE. Also, subject experts have prepared this study material keeping in mind the student’s requirements.

2. The simple language and easy explanation of topics help students to comprehend any concept fast.

3. Additionally, the detailed presentation of every topic provides all the necessary information to the students. Hence, they do not need any additional reference books for exam preparations.

4. Moreover, the use of real-life examples helps students relate to various topics.

5. The answers presented in these NCERT solutions are precise and to the point of making the exam preparations more focused.

NCERT Solutions for class 6 Science chapter 6 are available online for students to download it. They can visit the official website or mobile application of Vedantu to get it for free in PDF format. Apart from that, they can register for live classes and doubt clearing sessions with our teachers to further enhance their exam preparations.