NCERT Science Solutions, NCERT Solutions, NCERT Solutions Class 6, sorting materials into groups, class 6th chapter 4


Chapter 4
Sorting Materials into Groups

We have so many varieties of food and clothes and there are so many objects all over the earth. We are surrounded by countless objects and materials all over the world. For example-Chair, tables, cars, lock, tumbler, etc. are few examples and all have different colors, sizes, and shapes.


CBSE Class 6 NCERT Solutions,Free Class 6 Science Solutions,NCERT Books Solution, Free NCERT Solutions, NCERT CBSE Class 6 Science Solutions,NCERT CBSE Solutions,NCERT Class 6 Science Solutions,NCERT Solutions,NCERT Solutions For Class 6 Science Solutions,NCERT Solutions for Class 6th Science Chapter 4 Sorting Materials Into Groups,NCERT Solutions For Class 6 Science Chapter,Sorting Materials Into Groups
Materials and Objects


Properties of Materials:
We made an object or anything on the basis of their property for example tumbler can be made by the material which can hold water, not by paper or clothe, Car is made up of aluminum and metals we can’t make a car with wood or plastic.

Sorting Materials into groups, NCERT class 6 chapter 4
Selection of Materials


Appearance
All materials look different from one another, wood is different from iron and iron is different from aluminum and copper but most of the metals are similar in the property. We can see the luster in the new cut metal piece and this is the special property of metal only, we can’t see luster in plastic or wood.

Sorting of Materials
Appearance


Materials which have luster are usually called Metals, for examples: Iron, Aluminum, Copper, Gold, etc.
The property of luster can be lost with time due to rust and metals become unshiny and rough.

Rusting of Iron, Metal luster, Metal shininess
Rusting of Iron

Hardness: On applying pressure on some material by handsome seems hard and other materials can be easily pressed.
For example, we can take a key and scratch the surface of wood, stone, candle or other object made of different materials. Materials that can be scratched or compressed is called Soft Materials and others which are difficult to compress called Hard Materials.

Hard and Soft Materials, Sorting of Materials into group
Hard and Soft Materials


Soluble or Insoluble
Collect some solid samples of sugar, salt, sand, and chalk and observe what happens. For a clear understanding, watch the video:



We will see that sugar will dissolve completely and called Soluble and remaining one called as Insoluble which do not dissolve completely.

Collect some sample of Lemon juice, vinegar and mustard oil and add in water.

Solubility and Insolubility
Solubility and Insolubility


Some gases are also soluble in water whereas others are not, eg. Oxygen is dissolved in water is very important and some gases like Hydrogen, methane, nitrogen, etc. are insoluble.

Sink and Float
Sink and Float


Transparency:
We can see through some material like glass and can’t see through the wall or metal wall. Substances or material which we can see through are known as transparent materials (examples: Glass, clean water, etc).

Transparent Material
Transparent Material


Opaque Materials:
The materials through which we can’t see through are called as Opaque Materials.

Opaque Materials, Opaque wall
Opaque Materials


Translucent Materials:
The material through which we can’t see clearly called Translucent.

Translucent Materials
Translucent Materials



Exercise
1. Name five objects which can be made from wood.
Answer: Table, Chair, Furniture, Wooden toys, and Wooden cupboards.

2. Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Answer: Steel spoon and Glass bowl.

3. 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.
Objects
Materials
Book
Glass
Tumbler
Wood
Chair
Paper
Toy
Leather
Shoes
Plastics


Answer:
Objects
Materials
Book
Paper
Tumbler
Glass
Chair
Wood
Toy
Plastics
Shoes
Leather


4. State whether the statements given below are True or False.
  1. Stone is transparent, while the glass is opaque. False
  2. A notebook has luster while the eraser does not. False
  3. Chalk dissolves in water. False
  4. A piece of wood floats on water. True
  5. Sugar does not dissolve in water. False
  6. Oil mixes with water. False
  7. Sand settles down in the water. True
  8. Vinegar dissolves in water. True


5. Given below are the names of some objects and materials:
Water, basketball, orange, sugar, globe, apple and earthen pitcher
Group them as:
(a) Round shaped and other shapes
(b) Eatables and non-eatables

Answer: Round and shaped: basketball, orange, globe, and apple
Other Shapes: earthen pitcher

Eatables and non-eatables: Water, globe, earthen pitcher

6. List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
  1. Plastic ball
  2. Feather
  3. Match stick
  4. Hairs 

All float on kerosene and oil.

7. Find the odd one out from the following:
a) Chair, Bed, Table, Baby, Cupboard
b) Rose, Jasmine, Boat, Marigold, Lotus
c) Aluminum, Iron, Copper, Silver, Sand
d) Sugar, Salt, Sand, Copper sulfate

Answer:
  1. Baby
  2. Boat
  3. Sand
  4. Copper sulfate


Keywords: Hard, Insoluble, Lustre, Material, Rough, Translucent, Transparent, Soluble, Metals, Opaque, CTET, CTET Paper II, TGT, KVS, NCERT 6th class science, Sorting of Materials into groups.

Pic source: Pixabay, Recreational and video work is done by Anil Kashyap

NCERT Class 6


All Rights Reserved to Educationphile.

Post a Comment

Thank you for visiting

Previous Post Next Post