NCERT Solutions for Class 7 Science Chapter 6 - Physical and Chemical Changes

 

Let us start reading the preparation article Regarding CBSE 7 Class

NCERT Solutions for Class 7 Science Chapter 6 - Physical and Chemical Changes: Every day you come across many changes in your surroundings. These changes may involve one or more substances. For example, your mother may ask you to dissolve sugar in water to make a cold drink. Making a sugar solution is change. Similarly, setting curd from milk is a change. Sometimes milk becomes sour. Souring of milk is a change. Stretched rubber band also represents a change. In this chapter, you will also perform some activities and study the nature of these changes. Broadly, these changes are of two kinds, physical and chemical.

Physical changes are changes in the physical properties of substances. No new substances are formed in these changes. These changes may be reversible. In chemical changes, new substances are produced. Some substances can be obtained in a pure state from their solutions by crystallization.

Here are the important topics of NCERT Solutions for Class 7 Science Chapter 6 - Physical and Chemical Changes mentioned below:

6.1 Physical Changes

6.2 Chemical Change

6.3 Rusting of Iron

6.4 Crystallisation

In this chapter, you will also study about the different reactions. A change in which one or more new substances are formed is called a chemical change. A chemical change is also called a chemical reaction. For rusting, the presence of both oxygen and water (or water vapor) is essential. In fact, if the content of moisture in the air is high, which means if it is more humid, rusting becomes faster.

After going through this chapter, you must be able to get the NCERT Solution of these questions which are mentioned below, as these questions are from the Science book of NCERT.

Q1. 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. 

Q2. How would you show that the setting of curd is a chemical change? 

Q3. Explain why burning of wood and cutting it into small pieces are considered as two different types of changes. 

Q4. Describe how crystals of copper sulphate are prepared.

If you have any problem in answering these questions or you are not getting the correct answers then don't worry, NCERT Solutions for Class 7 Science Chapter 6 - Physical and Chemical Changes is there for you to help. Solutions for NCERT Class 7 Science Chapter 6 - Physical and Chemical Changes will give you answers to all the questions which are mentioned in the NCERT book.

First of all, try to answer all the questions by yourself. Then, if you need any help, NCERT Solutions for Class 7  will suggest you the best answers which are written by our experts.

NCERT Solutions for Class 7 Science Chapter 6 Physical and Chemical Changes- Solutions

NCERT Solutions for Class 7 Science – Chapter-wise

Chapter No.

Chapters Name

Chapter 1

Nutrition in Plants

Chapter 2

Nutrition in Animals

Chapter 3

Fibre to Fabric

Chapter 4

Heat

Chapter 5

Acids, Bases and Salts

Chapter 7

Weather, Climate and Adaptations of Animals to Climate

Chapter 8

Winds, storms and cyclones

Chapter 9

Soil

Chapter 10

Respiration in Organisms

Chapter 11

Transportation in Animals and Plants

Chapter 12

Reproduction in Plants

Chapter 13

Motion and Time

Chapter 14

Electric Current and Its Effects

Chapter 15

Light

Chapter 16

Water: A Precious Resource

Chapter 17

Forests: Our Lifeline

Chapter 18

Wastewater Story

 

NCERT Solutions for Class 7- Subject Wise

NCERT Solutions for Class 7 Maths

NCERT Solutions for Class 7 Science

 

Recently Asked Questions

 

Related Articles

Exams
Articles
Questions