Sorting Materials into Groups is Chapter 4 taken from JKBOSE Class 6 Science. The given post is about Sorting Materials into Groups Class 6 Questions. It is about short notes and question answers of the chapter. The previous post was about Chapter 3 Fibre to Fabric Question Answers. Let’s begin:
Sorting Materials into Groups Class 6 Question Answers
Overview of Chapter
- OBJECTS AROUND US.
- PROPERTIES OF MATERIALS
- Soluble or Insoluble.
- Objects may sink or float.
OBJECTS AROUND US: When we look around us we find so much variety of objects is there. For example, books, pen tables, chairs, poles, cars, boxes, plants, animals, paper, shoes, clothes, football, cricket ball, bat, utensils, toys and so on. All these and so many other things which can be seen and touched are called objects. These objects are made of matter called material. An object can be made up of one or more than one material.
PROPERTIES OF MATERIALS: All the materials around us have different properties and based on these properties we can choose materials to make an object. For example, we cannot use a piece of cloth for making a tumbler because it cannot hold water similarly we cannot use paper for making cooking utensils. We must know the properties of materials before using them to make an object. Here are some properties of materials.
- Appearance: Based on the appearance the materials are divided into shiny and dull. The materials which have a shiny appearance are said to have lustre. For example, materials like metals, metal alloys and diamonds. The materials which have a dull appearance are said to have no lustre. For example, wood, paper, chalk, brick, blackboard etc.
- Hardness: Based on the property of hardness, the materials can be classified as hard and soft. The objects which can be easily compressed, bent, cut or moulded are called soft materials. For example, cotton, cotton, wool, candle wax, butter, clay etc.
- Soluble or Insoluble: Based on this property, the materials can be grouped as soluble and insoluble. The materials which completely dissolve or disappear in water are called soluble materials. For example, salt, sugar, copper sulphate, alum etc. The materials which do not dissolve or disappear in water even after stirring are called insoluble materials. For example, chalk powder, sawdust, flour, wax, sand, plastic etc.
- Objects may sink or float: The materials which do not dissolve in water may either float or sink in it. So the objects are classified as floating materials and sinking materials. The floating and sinking of materials in water are based on their density. The materials which are heavier than water sink in it. For example, iron, stone, chalk, glass, copper, silver etc. The materials which are lighter than water float on its surface. For example, wood, plastic, dry leaves, ice, oil, kerosene and petrol etc.
- Transparency: Based on this property the materials can be classified as transparent, opaque and translucent. The materials or substances through which we can see clearly are called transparent materials. For example, Glass, air, water etc. The materials through which we cannot see the objects clearly are called translucent materials. For example, oil paper, butter paper, muddy water and butter paper etc. The materials through which we cannot see at all are called opaque materials. For example, wood cardboard, stone, bricks, and metals etc.
Sorting Materials into Groups Class 6 Questions
- Name five objects which can be made from wood.
Ans. Five objects which are made from wood are a Table, Chair, Hockey, Bat, Bed, Plough, Door, Box etc.
- Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Ans. The objects which shine are a glass bowl and a 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.
- State whether the statements given below are True or False.
(i) Stone is transparent, while glass is opaque. (False)
(ii) A notebook has lustre while an 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 the water. (True)
(viii) Vinegar dissolves in water. (True)
- 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) Roundshaped and other shapes.
|Round Shaped||Other Shapes|
b) Eatables and non-eatables
- List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Ans. The list of items which can float on the surface of the water is as under:
- Piece of wood 2. Dried leaves 3. Thermocol 4. Cork 5. Paper 6. Wax 7. Ice 8. Plastic 9. Ice etc.
Yes, these items also float on the surface of oil or kerosene.
- Find the odd one out from the following:
- a) Chair, Bed, Table, Baby, Cupboard
- b) Rose, Jasmine, Boat, Marigold, Lotus
- c) Aluminium, Iron, Copper, Silver, Sand
- d) Sugar, Salt, Sand, Copper sulphate
- a) Baby, all others are non-living things.
- b) Boat, all others are names of flowers.
- c) Sand, all others are names of metals.
- d) Sand, all others are soluble in water.
That’s all we have about Sorting Materials into Groups Class 6 Questions. Hope it has helped. Do share your views about this post in the comment section below.