NCERT Solutions for Class 7 Science Chapter 6 - Free PDF Download
NCERT Solutions of Physical and Chemical Changes for Science Chapter 6 is a reference study resource for Class 7 Science students with detailed answers to all the Class 7 Science Chapter 6 textbook questions.
Study the NCERT Solutions and get to know all the important topics from Chapter 6 - Physical and Chemical Changes. Along with this, know all the topics covered and study the important topics discussed in this article. You can also download NCERT Solutions for Class 7 Maths to help you to revise the complete syllabus and score more marks in your examinations.
FAQs on NCERT Solutions For Class 7 Science Chapter 6: Physical And Chemical Changes
1. What is a physical and chemical change according to Chapter 6 of Class 7 Science?
Physical Change: Any change in a substance’s physical properties like shape, size, colour etc. is said to be a physical change. It is generally a reversible change and no new substance is formed during this.
Chemical Change: When a substance combines with any other substance to form a new substance or when it undergoes a chemical reaction, the change that occurs is known as a chemical change. It is generally a non-reversible change.
2. What is a chemical change? Write a short answer as stated in Chapter 6 of Class 7 Science books.
When a substance combines with any other substance to form a new substance or when it undergoes a chemical reaction, the change that occurs is known as a chemical change. It is generally a non-reversible change.
These changes are generally termed chemical reactions. Some examples of chemical change are as follows;
Rusting of Iron.
Ripening of fruits.
Photosynthesis and respiration in living organisms.
Digestion of food in living organisms.
Curdling of milk.
3. How many questions are present in Chapter 6 of Class 7 Science?
Chapter 6 of NCERT Solutions for Class 7 Science comprises a total of 12 questions among which 3 questions are short-form answers and the rest 9 questions are long-form answers. For extended learning, Vedantu has provided the solutions to the questions free of cost, which are a part of the Activities and Projects mentioned in the textbook. There are a total of 4 questions from this extended learning.
4. What are the important topics in Chapter 6 of Class 7 Science?
The important topics covered in Chapter 6 of Class 7 Science are physical changes and chemical changes. The distinction between physical and chemical changes and the results obtained after these changes are covered in this chapter. There are questions based on the examples of physical and chemical changes that occur in substances. One word questions, true-false type and fill in the blanks questions, along with short and long answer type questions based on these changes are provided.
5. When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place according to Chapter 6 of Class 7 Science.
When a candle is lit, it undergoes both physical and chemical changes:
Physical change: wax melting, melted wax vapourisation
Chemical change: The combustion of wax vapours produces carbon dioxide, heat, and light.
When LPG flows out of the cylinder and is transformed from liquid to gaseous state, a physical change occurs, and a chemical change occurs when gas burns in the air.
To do well in tests, you should go through all of the NCERT questions and obtain a thorough understanding of all of the Chapter 6 of Class 7 Science provided by Vedantu on its website(vedantu.com) or mobile app.