NCERT Solutions for Class 6 Science Chapter 6 - Free PDF Download
The NCERT solutions for class 6 Science chapter 6 along with the textbook can help students to prepare for their exam effectively. By referring to these NCERT Solutions of the Chapter, Changes Around Us, students can develop a deeper understanding of all the important topics covered in the chapter. These NCERT Solutions are prepared by the subject-matter experts at Vedantu to provide students with proper and precise answers to the textbook questions of this chapter. The PDF of NCERT Solutions for Class 6 Science Chapter 6 can be downloaded for free from Vedantu. Every NCERT Solution is provided to make the study simple and interesting on Vedantu. You can also download NCERT Solutions for Class 6 Maths to help you to revise complete syllabus and score more marks in your examinations.
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Access NCERT Solutions for Class 6 Science Chapter 6 – Changes Around Us
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.
Can be reversed (Yes / No)
The sawing of a piece of wood
The melting of ice candy
Dissolving sugar in water
The cooking of food
The ripening of a mango
Souring of milk
4. A drawing sheet changes when you draw a picture on it. Can you reverse this
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
Introduction About Changes Around Us
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 Topic - Wise Discussion
Class 6 Science chapter 6 has three sub-topics. Here is a topic-wise discussion on each of them.
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.
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.
The simple language and easy explanation of topics help students to comprehend any concept fast.
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.
Moreover, the use of real-life examples helps students relate to various topics.
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.
FAQs (Frequently Asked Questions)
1. What is the Focus of NCERT Class 6 Science Ch 6?
The focus of class 6 Science chapter 6 is on the changes that happen every day in the surroundings. The aim here is to make students aware of such alterations and prompt them to notice them. Also, this chapter focuses on different types of changes like reversible, irreversible, contraction, expansion, melting, and evaporation. It contains a series of activities for students, which they can try at home to understand these topics better. Students can quickly download the PDF file of NCERT Solutions from Vedantu, and refer to them to improve their exam preparation.
2. What are the changes around us according to Chapter 6 of Class 6 Science?
We human beings are surrounded by a myriad of changes around us. We tend to overlook them but if we notice our surroundings closely, we will be able to find several changes happening. Changes like trees growing, fruits and vegetables ripening, leaves turning yellow and many more. Class 6 Science Chapter 6 'Changes around us' tells us about the changes happening around us and the changes occurring with our own selves. To know more about the chapter, students can download NCERT Solutions for this chapter from Vedantu’s official website (vedantu.com) or mobile app free of cost.
3. What are the types of changes in Class 6 Science Chapter 6?
Changes that occur around us can be categorized into two types:
Reversible Changes: The changes that can be reversed are known as reversible changes. For example- melting of ice or stretching of rubber.
Irreversible Changes: The changes that cannot be reversed are known as irreversible Changes. Once the substance has changed, it cannot get back to its original state. For example: ripening of fruit or cutting a piece of wood.
4. What are the changes taking place in our body according to Chapter 6 of Class 6 Science?
Like every other thing, even our body performs a number of changes daily. These changes can be reversible and irreversible as well. Physical changes that occur in our body are growing of nails, growing of height, growing of hairs, increase in weight, etc. Some of these are reversible but some are irreversible. Our body also performs a bundle of chemical changes which are absolutely irreversible such as digestion, respiration, hormonal changes etc.
5. What is reversible change according to Chapter 6 of Class 6 Science?
Reversible change is a type of change that can be reversed back, which means, a substance can come back into its original state. Following are few examples of reversible changes:
Folding of paper.
Stretching of a rubber band.
Melting of Ice cubes.
Inflation of a balloon.
Melting of wax.
Physical changes are reversible and can be brought back to their original shape and size but chemical reactions are not reversible.
6. What is a change according to Chapter 6 of Class 6 Science?
A change is a minute modification that happens physically or chemically in a substance. The change can be either reversible or irreversible. The change is called reversible when it can be reversed back to its original state. However, irreversible change occurs when it cannot be reversed back to its previous state. Few examples of ‘change’ are as follows: