NCERT Solutions For Class 6 Science Chapter 6 PDF Download
Sr. 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 |
Ans:
Sr. 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 |
CBSE Board Exam Centre List 2024
CBSE Syllabus Class 6 | |
CBSE Class 6 Science Syllabus | CBSE Class 6 Maths Syllabus |
CBSE Class 6 Social Science Syllabus | CBSE Class 6 English Syllabus |
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The second sub-topic of chapter 6 Science class 6 explores different methods to induce change beyond those mentioned earlier. It begins with an explanation of how wooden handles are attached to various tools. Typically, the iron blades on these tools have a ring smaller than the handle. To fit it into the handle, heat is used to expand it, making it slightly larger. When the rings cool down, they contract, fitting tightly. Similar examples occur in our surroundings, and this change in size due to heat is called expansion and contraction. In the presence of rising heat, substances expand, and in its absence, they contract. If the temperature keeps increasing, substances will eventually melt and evaporate. Note that the amount of expansion and contraction varies for different solids, liquids, and gasses. The NCERT Solutions for class 6th Science chapter 6 Changes Around Us cover various activities and examples to help students comprehend this concept further.