Class 6 Science Chapter 4 focuses on why sorting materials into groups is essential. In this topic, students are encouraged to seek for and observe items around them or things that they interact with on a regular basis. You are aware that some objects are living, while others are not. All objects do not have the same shape, size, colour, or application. Based on multiple observations, you may infer that all items have different shapes, colours, and properties.
You should also know that materials can be classified based on attributes such as appearance, solubility, density, transparency, and so on.

NCERT Solutions for Class 6 Chapter 4 teaches students about various classifications of materials. The first classification is based on materials. The chapter states that all objects around us are made of one or more materials. Our clothing items are made from a wide variety of fabrics. Our furniture is made up of different components. The food we eat comes in a great variety. Everything around us is composed of a wide range of materials, including the automobiles we drive and the houses we live in.

After explaining material-based classification, NCERT Solutions teaches students about classification based on shapes. Chapter 4 points out that all objects in our surroundings have diverse shapes. Some have circular and square shapes, while others have cubic and cuboid shapes. The chapter lists numerous instances of shapes found around us, such as a washing machine, a ball, and so on.
One category consists of circular or spherical shapes, while another consists of cubical, cuboidal, square, and rectangular shapes. This type of classification enables us to evaluate and examine the characteristics of materials having various shapes.

In NCERT Solutions for Class 6 Science, the next classification for students to study is a classification based on raw materials. Activities in Chapter 4 ask students to consider the objects they use regularly for answering questions such as have you ever thought about what a toothbrush is made of? What ingredients are used to produce the toothbrush packet? It also points out several additional objects and asks the learners to think about their construction. Lastly, the chapter reinforces the fact that all the products we use in our daily lives can be categorised depending on the basic materials utilised in their manufacture.

Classification based on the states of matter is the final topic in chapter 4. The MSVgo App explains this heading as everything around us is in a definite state of matter, such as solid, liquid, or gas. For example, the water that we drink is liquid, whereas the food we eat is solid. The hot milk we drink in the winter is liquid, whereas the steam that rises from it is gas. Thus, all the objects we see or use in our daily lives are classified into one of three categories: solid, liquid, and gas.

Chapter 4 also emphasises the importance of the categorisation of materials. NCERT Solutions addresses questions based on this idea and states that sorting items into groups is vital because it makes it easy to find similar objects by grouping them together.

1. Why do we sort materials into groups?

Ans. Thousands of objects and materials are present in our surroundings. Several materials among them are new to us, and we have not interacted with them before. Now, to understand the use of new things and study their qualities, we need to group them based on various factors. We must ensure that all objects in the world are uniformly classified.

2. How are materials classified?

Ans. Materials can be classified depending on characteristics such as shape, size, colour, materials, state of matter, and so on.

3. What are the advantages of sorting materials?

Ans. Sorting materials into categories allows us to conveniently locate them and use them based on their qualities.

4. What are the advantages of the classification of materials?

Ans. The advantages of the classification of materials are that it becomes easier to find comparable objects and examine the qualities of materials. 

5. Which of the following is not matter?

(a) Water

(b) Air

(c) Sound

(d) Fruits

Ans. (c) Sound

Sound is a form of energy; it is not matter. 

Matter is defined as something that occupies space and has mass.

6. Classification is:

(a) grouping things as living and nonliving.

(b) grouping living things based on common properties.

(c) grouping non-living things based on common properties.

(d) grouping all things, living or nonliving, based on common properties.

Ans. (d) grouping all things, living or nonliving, based on common properties.

7. Q. List five objects that can be created from wood.

Ans. 1. Chair, 2. Table, 3. Sofa, 4. Pencil, 5. Door.

8. From the following list, choose the objects that shine:

Glass bowl, plastic toy, steel spoon, cotton shirt

Ans. Glass bowl and steel spoon, both are objects that shine.

9. Group the following items as (a) Round and not round objects and (b) eatables and non-eatables.

 Cold drink, ball, tomato, salt, balloon, guava 

Ans.

(a) Round objects: Ball, guava, tomato, balloon

Not round objects: Cold drink, salt

(b) Eatables: Cold drink, tomato, salt, guava

Non-eatables: Ball, balloon

On the MSVgo App for class 6 science, we studied chapter 4, Sorting Materials into Groups. We learnt why it is vital to classify materials into different groups, and their categories. Let We can summarise that the items come in a variety of shapes, colours, and states. They are made of various materials. The raw material required for manufacturing things can be selected correctly due to the classification of materials. Sorting objects enables us to conveniently locate them and examine their qualities. 

The MSVgo App is beneficial for going through the lesson in detail. The app has numerous advantages. Join MSVgo and download the app for free. The MSVgo App offers multiple features and services, such as 15,000+ videos and 10,000+ questions bank, developed in accordance with the NCERT syllabus. The app also has content that is mapped with boards of CBSE, ICSE, IGCSE, and ISC, textbook question video solutions, solutions matched to all textbooks, and quizzes to test your knowledge.

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