Sorting Materials Into Groups Class 6 Notes CBSE Science Chapter 4 (Free PDF Download)

The following list comprises the important topics that have been covered in this chapter:

• Objects around Us

• Properties of Materials

• Appearance

• Buoyancy

• Hardness

• Opacity

• Solubility

Access CBSE Class 6 Science Chapter 4 - Sorting Material into Groups Notes

1. What is matter? 

Matter is anything that occupies space and has mass along with it. Objects around us are made from a different variety of materials that we see in our day-to-day life.

2. Material is a substance that is used for making things. A material could be used to make a large number of different objects. An object could be either made of a single type of material or of many different types of materials.

3. General Properties of Material

i. Appearance: Material could be shiny ( lustre or lustre) or could be rough (non- lustrous). All metals are lustrous, some are more while the others are less whereas wood, rubber etc. are non-lustrous.

ii. Hardness: The material could be hard and soft. For example Rocks, iron etc. are hard. Hard materials may be :

a. Brittle: Those materials which break into smaller pieces or are powdered when hammered. For example, rock, glass, salt.

b. Malleable: Materials that can be spread into thin sheets when beaten. For example, metals are malleable. 

c. Ductile: Materials that can be drawn into thin and long wires. For example, metals are ductile as well. Materials like wood, rubber, and fibres are soft. 

iii. Thorough Visibility:- 

a. Transparent: Objects through which light may pass. For example, glass, plastic, sugar, and salt solution in water.

b. Translucent: Objects through which light may pass partially. For example, milky glass, milk.

c. Opaque: Objects through which light does not pass. For example wood, metals, rock, and walls.

iv. Good and Bad Conductor of Electricity:

a. Material that allows electric current to pass through them easily is the good conductor of electricity. For example, metals are known as good conductors of electricity.

b. Materials like wood, plastic, rubber, cork, and certain materials are bad conductors of electricity as the electric current does not pass through them.

v. Good and Bad Conductor of Heat:

All metals are good conductors of heat whereas wood is the bad conductor of heat.

vi. Combustible Substances: Those materials which catch fire on heating easily are combustible substances. For example, wood, plastic, fibre, and paper are combustible substances.

vii. Ability to Float/Sink in Water: 

Those materials that sink in water are denser than the water whereas the material which floats on water is less dense than water.

viii. Based on Solubilities: 

Those substances which get completely soluble in water like salt and sugar which disappear in water are said to be soluble. The substances that do not disappear in water and remain as it is are said to be insoluble in water.

ix. Miscible and Immiscible Liquid:

a. When two liquids are mixed and it does not mix well, then it is said to be immiscible.

b. Whereas the liquids which mix well with water are said to be miscible.

4. Grouping of Materials

i. Objects made up of wood

ii. Objects made up of fibre

iii. Objects made up of metal

iv. Objects made up of ceramic

v. Objects made up of glass

vi. Objects made up of plastic

vii. Objects made up of rubber

viii. Some things are liquids, e.g., oil

5. Classification of material is done into groups together on the basis of similarities and differences in their properties. This is done for convenience and to study their properties easily.

6. What are the advantages of classification?

The several advantages of the classification of material are given below:

a. It helps in the identification of objects.

b. It helps in the sorting of the objects.

c. It also helps in locating things when unable to find them.

d. It makes the study of different objects easy and meaningful instead of studying each material separately from each other which becomes hard.

e. It helps to understand similarities and dissimilarities between the objects around us.

Benefits of Studying from Our Class 6 CBSE Revision Notes on Science Chapter 4 - Sorting Materials into Groups 

• The notes are comprehensive and cover all the important concepts in the chapter. This means that you can be confident that you are prepared for any question that comes up in the exam.

• The notes are well-organized and easy to follow. This makes it easy to understand the concepts and to find the information you need.

• The notes are accompanied by diagrams and illustrations. This makes it easier to understand the concepts and to visualize the different types of materials.

• The notes are updated regularly to ensure that they are relevant to the latest exam pattern. This means that you can be confident that you are practicing with questions that are similar to the ones that you will see in the exam.

• The notes are available for free download. This means that you can access them whenever you need them, and you can save money on study materials.

Vedantu's revision notes also offer the following:

• Practice questions: The notes include a variety of practice questions that can help you to test your understanding of the concepts.

• Answers: The practice questions are accompanied by answers, so that you can check your answers and learn from your mistakes.

• Video explanations: Vedantu also offers video explanations for the practice questions, which can help you to understand the concepts even better.

Summary

Materials exist in nature in different forms. Some are natural, while others are man-made or synthetically made. Sorting these materials into groups or categories is essential for convenience in use and for further studies conducted on them. This chapter deals with the sorting of these materials and includes topics like classification of materials, properties of materials, and so on.

Chapter wise Revision Notes for Class 6 Science - Other Chapters

• Chapter 1 - Food: Where Does It Come From Notes

• Chapter 2 - Components of Food Notes

• Chapter 3 - Fibre to Fabric Notes

• Chapter 5 - Separation of Substances Notes

• Chapter 6 - Changes around Us Notes

• Chapter 7 - Getting to Know Plants Notes

• Chapter 8 - Body Movements Notes

• Chapter 9 - The Living Organisms and Their Surroundings Notes

• Chapter 10 - Motion and Measurement of Distances Notes

• Chapter 11 - Light, Shadows and Reflections Notes

• Chapter 12 - Electricity and Circuits Notes

• Chapter 13 - Fun with Magnets Notes

• Chapter 14 - Water Notes

• Chapter 15 - Air Around Us Notes

• Chapter 16 - Garbage In, Garbage Out Notes