Get ready to explore the amazing world of stuff around us! This chapter helps us learn about different materials and how we can group them based on what they're like. We'll find out what makes solids, liquids, and gases different from each other. Plus, we'll learn cool ways to separate materials based on how they behave.
The topics and Sub Topics in Class 6 Science Chapter 2 Sorting Materials and Groups
| Section Name | Topic Name |
| 2 | Sorting Materials and Groups |
| 2.1 | Objects Around Us |
| 2.2 | Properties of Materials |
| Fibre: | The hair-like materials are found in stems and flowers. |
| Yarn: | The thin thread is used for knitting or weaving. |
| Combing: | The process of making the cotton fully. |
| Fabric: | The clothes we wear. |
| Retting: | A process by which the jute stems soaked in water for 20 days get softened. |
| Ginning: | A process by which seeds are separated from the fibres. |
| Cotton boll: | The fruits of the cotton plant. |
| Spinning: | The process of drawing out, twisting and winding of fibres into a continuous yarn. |
Q 1. Name five objects which can be made from wood.
Ans:
Q 2. Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Ans: Glass bowl and steel spoon are shining objects.
Q 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 | Material |
| Book | Glass |
| Tumbler | Wood |
| Chair | Paper |
| Toy | Leather |
| Shoes | Plastics |
Ans:
| Objects | Material |
| Book | Paper, wood |
| Tumbler | Glass, wood, plastic |
| Chair | wood, plastic |
| Toy | Glass, wood, paper, plastics, leather |
| Shoes | Leather, plastic |
Q 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 an 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 the water.
(viii) Vinegar dissolves in water.
Ans:
i) False
ii)False
iii) False
iv) True
v) False
vi) False
vii) True
viii) True
Q 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
Ans:
(a) Round shaped – Basketball, Orange, Globe, Apple, Earthen Pitcher
Other shapes – Water, Sugar
(b) Eatables – Water, Orange, Sugar, Apple
Non-eatables – Basketball, Globe, Earthen Pitcher
Q 6. List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Ans: Generally, substances that are less dense than the liquid they are placed in will float.
Q 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 Sulphate
Ans:
a) Baby – others are made up of wood
b) Boat – others are flowers
c) Sand – others are metals
d) Sand – others are soluble in water