Class 6 Science Chapter 4 notes Sorting Materials into Groups:

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Sorting Materials into Groups class 6 Science chapter 4 notes: -

As we study in earlier chapters of class 6, we find different things around us. Some of them are eatable, some are non-eatable, some are hard, but some are soft. So, all the things have different properties. All things that are occupied space are called material. Now the point is, how can we divide all materials into groups? As systematic classification, we can divide them according to their different properties. It may be physical or other properties.

Why Sorting of Materials into Group is necessary: -

We observe different materials around us. They have different types. As human beings, we notice some have the same properties, like physical or making materials. But most of them have completely opposite properties. So, this is necessary for classifications of all materials. Some points are explained below:

If you classified the material, it will help you identify the properties.
By sorting, you are aware of the nature of materials, so it will help to use them as suitable work.
According to these properties, you can easily find it is metal, non-metal, or other nature.

Now it’s your turn to first observe all materials around you. What kind of them, how do they look, what kind of material is used to make them, what is their physical appearance, and what other properties do they have?

Sorting Materials into Groups according to their properties:-

Every material having different properties may have physical or other properties like reactive solvent, etc. There are some materials that are classified based on their physical appearance based on the following properties: –

Appearance: This category is based on how they are looking and how their physical structure is. Like clothes are soft, but iron roads are hard, so they are different category materials.

Lustre: There are some materials that look very shiny. According to their lustre nature, we put it in a lustre category. Approx all matels have lustre nature. When we cut steel and aluminium in sheets, we found they have a shine property on every cutting sheet. But there are some materials, like silver, that lost their shine according to time and atmospheric conditions.

Hardness: We can feel which materials are soft or hard by touch and other activity. We can easily press some materials, and they change their positions, but some are very hard; they can’t press and don’t change their structure. There are two types of categories in hardness property:

Hard: These are those materials that do not press easily and cannot change their shape when pressure is applied. Iron or wood is an example of it.
Soft: These are those materials that are easy to compress, and they can change their shape by compressing. Clothes are an example of it.

These are the classifications according to physical properties. Now in this article we will discuss other properties to classify the materials:

Soluble or Insoluble:

This property is all about the dissolving capacity of a material. We observe there are many materials that can dissolve easily in water, and some are not.

Soluble: Those materials that dissolve in water are in the soluble category. Sugar and salt are examples of soluble.
Insoluble: Those materials are not dissolved in water. Iron, wood, and clothes are examples of insoluble.

Object may float or sink:

When we checked about soluble and insoluble materials, we noticed some were floating and some sank in water. According to these properties, we can classify the materials into groups.

Examples of floating materials: wood, ice

Examples of sink materials: iron and all metals are examples.

Transparency: –

We can classify the materials according to their transparency property. There are some materials that are transparent (we can see easily across from the materials on both sides) but are not like this. This type of material has three types of materials:

Transparent: These are those materials that can allow the light to pass through themselves, and we can easily see it from both sides of it.
Translucent: These are those materials that can allow the light to pass, but on a limited scale, and we will not be able to see clearly across from them.
Opaque: These are those materials that do not allow the light to pass through them and are not able to see across them.

These are the main properties to classify the materials, but some additional properties are discussed below:

Ductile: These are those materials that can change their shape ( like wire) easily by applying force. Gold is the best ductile metal.

Malleability: These are those materials that can cut or change into sheets without breaking. They are called malleable materials. If those materials breakdown when we change into a sheet, then it is called brittle.

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Conclusion: -

Sorting materials into groups in class 6 science chapter 4 notes is the most important chapter from the point of view of classification based on their properties and identifying what properties they carry. From the class notes of this chapter, you can easily understand the base of materials, which is helpful for further classes and exams. Through this concept clearing, we can easily identify metal and non-metal based on other properties. We can say this is a pillar chapter of science in the stream of metal and non-metal or another sector. By these properties in further classes you can identified the materials is it metal or non-metals and other details of the materials. If you want to check our earlier chapters notes and MCQ’s you can visit our website class 6 science tab.

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For Hindi Medium Students

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Class 6 Science Chapter 4 notes Sorting Materials into Groups:

Table of Contents

Sorting Materials into Groups class 6 Science chapter 4 notes: -

Why Sorting of Materials into Group is necessary: -

Sorting Materials into Groups according to their properties:-

Conclusion: -

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