NCERT Solutions for Chapter 4 Sorting Materials into Groups Class 6 Science
Short Notes for Class 6 Science Chapter 4 Sorting Materials into Groups
Objects around us are made up of a large variety of materials. A given material could be used to make a large number of objects. It is also possible that an object could be made of a single material or of many different types of materials. Different types of materials have different properties. Some materials are shiny in appearance while others are not. Some are rough, some smooth. Similarly, some materials are hard, whereas some others are soft. Some materials are soluble in water whereas some others are insoluble. Some materials such as glass, are transparent and some others such as wood and metals are opaque. Some materials are translucent. Materials are grouped together on the basis of similarities and differences in their properties. Things are grouped together for convenience and to study their properties.
Chapter Name | Sorting Materials into Groups NCERT Solutions |
Class | CBSE Class 6 |
Textbook Name | Science |
Related Readings |
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Question 1: Name five objects which can be made from wood.
Answer
Table, Chair, Bed, Doors, Bullock cart etc.
Question 2: Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Answer
Glass bowl and steel spoon.
Question 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 |
|
Objects |
Materials |
|
Book |
Paper |
|
Tumbler |
Glass |
|
Chair |
Wood |
|
Toy |
Plastics |
|
Shoes |
Leather |
(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.
Answer
(i) Stone is transparent, while glass is opaque. (False)
(ii) A notebook has lustre while eraser does not. (False)
(iii) Chalk dissolves in water. (False)
(iv) A piece of wood floats on water. (True)
(v) Sugar does not dissolve in water. (False)
(vi) Oil mixes with water. (False)
(vii) Sand settles down in water. (True)
(viii) Vinegar dissolves in water. (True)
Question 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 eatables
Answer
(a)
Round shaped: Basket ball, orange, globe, apple and earthen pitcher
Other shapes: Water and sugar
(b)
Eatables: Water, orange, sugar and apple
Non eatables: Basket ball, globe and earthen pitcher
Question 6: List all items known to you that float on water. Check and see if they will float on oil or kerosene.
Answer
Wooden block, Paper, Balloon, Hair, plastic bottle, wooden logs, Boat etc. will float on water. A few of these like hair, balloon can float on kerosene or oil. Generally, substances have less density than oil and water can float.
For example, few types of wood have densities higher than oil but less than water, so it floats on water but not on kerosene.
Question 7: Find the odd one out from the following:
a) Chair, Bed, Table, Baby, Cupboardb) Rose, Jasmine, Boat, Marigold, Lotus
c) Aluminium, Iron, Copper, Silver, Sand
d) Sugar, Salt, Sand, Copper sulphate
Answer
a) Baby: Rest others are made up of wood and are non – living things.
b) Boat: Rest others are flowers.
c) Sand: Rest others are metals.
d) Sand: Rest others are in crystal forms.