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Sorting Material into Groups

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NCERT Solutions for Class 6th Science Chapter 2

The chapter “Sorting Materials into Groups” from NCERT Solutions for Class 6th Science Chapter 2 on understanding the concept of classification based on observable properties of materials. Here’s a summary:

Why Sort?

Sorting helps us organize and categorize materials based on their similarities and differences.

This makes it easier to identify, locate, and study them.

Classification Methods:

States of Matter: Materials can be categorized into solids, liquids, and gases based on their physical state at room temperature.

Physical Properties: Further classification can be done based on other properties like texture, size, shape, shine (lustre), transparency, solubility in water, and hardness.

Examples:

Metals are generally shiny, hard, and conductors of heat and electricity.

Non-metals can be shiny or dull, brittle or flexible, and insulators or conductors.

Additional Points:

Mixing different materials can lead to new combinations with new properties, sometimes creating solutions or alloys.

Sorting and classification are important not only in science but also in everyday life, helping us organize our belongings, information, and even ideas.

Exercises NCERT Solutions for Class 6th Science Chapter 2

  1. Name five objects which can be made from wood.

Ans :

  1. Chair
  2. Table
  3. Door
  4. Pencil
  5. Boat
  6. Select those objects from the following which shine:

Glass bowl, plastic toy, steel spoon, cotton shirt

Ans : Glass bowl

Steel spoon

  • Match the objects given below with the materials from which they could be made. Remember, an object could be made from more than one material and a given material could be used for making many objects.
ObjectiveMaterials
BookGlass
TumblerWood
ChairPapers
ToyLeather
ShoesPlastics

Ans :
ObjectMaterials
BookPaper
TumblerGlass, Plastic, Wood
ChairWood, Plastic, Metal
ToyWood, Plastic, Metal, Fabric
ShoesLeather, Fabric, Rubber

4. State whether the statements given below are True or False.

(i) Stone is transparent, while glass is opaque.

(ii) A notebook has lustre while eraser does not.

(iii) Chalk dissolves in water.

(iv) A piece of wood floats on water.

(v) Sugar does not dissolve in water.

(vi) Oil mixes with water.

(vii) Sand settles down in water.

(viii) Vinegar dissolves in water.

Ans :

(i) False                                             

(ii) True

(iii) False                                        

(iv) True

(v) False
 (vi) False

 (vii) True

 (viii) True

5. Given below are the names of some objects and materials: Water, basket ball,  orange, sugar, globe, apple and earthen pitcher.

 Group them as:

(a) Round shaped and other shapes

(b) Eatables and non eatable

Ans : (a) Round shaped and other shapes:

  • Round shaped: Basketball, orange, globe, apple, earthen pitcher
  • Other shapes: Water, sugar (since it is usually in granular form)

(b) Eatables and non-eatables:

  • Eatables: Water orange, sugar, apple
  • Non-eatables: Basketball, globe, earthen pitcher
  • List all items known to you that float on water. Check and see if they will float on  an oil or kerosene.

Ans : Objects that often float on water:

  • Natural materials: Wood, cork, empty plastic bottles (due to trapped air), some fruits (like apples and oranges due to air pockets), ice (though only partially submerged)
  • Man-made materials: Empty plastic containers, life jackets, pool noodles (due to air pockets)

FAQ’S

What is the significance of “Sorting Materials into Groups” in NCERT Solutions for Class 6th Science Chapter 2?

In Chapter 2 of Class 6th Science, students explore the importance of classifying materials into groups based on their properties, helping them understand the characteristics and behavior of different substances.

How do we classify materials into groups according to NCERT Solutions for Class 6th Science Chapter 2?

Materials are classified into groups based on their physical properties such as color, texture, transparency, solubility, and conductivity, allowing students to categorize and identify substances more efficiently.

What are the benefits of sorting materials into groups as discussed in NCERT Solutions for Class 6th Science Chapter 2?

Sorting materials into groups facilitates organization, comparison, and analysis of substances, enabling students to recognize patterns, make predictions, and draw conclusions about their properties and uses.

Can you provide examples of materials grouped according to their properties as illustrated in NCERT Solutions for Class 6th Science Chapter 2?

Examples of materials grouped based on their properties include metals and non-metals, conductors and insulators, magnetic and non-magnetic materials, transparent and opaque substances, and soluble and insoluble compounds.

How does understanding the sorting of materials into groups contribute to everyday life according to NCERT Solutions for Class 6th Science Chapter 2?

Understanding the sorting of materials into groups enhances students’ ability to identify and select appropriate materials for specific tasks, such as household chores, construction projects, and scientific experiments, promoting efficiency and safety in various activities.

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