Chapter 6: Materials Around Us Worksheet

Bhupendra Rawat -

 Chapter 6: Materials Around Us Worksheet 

A. Multiple Choice Questions 

1. Which of the following is a material?

(a) Chair

(b) Wood ✅

(c) Table

(d) Bottle  

2. The method of arranging objects into groups based on common properties is called:

(a) Measurement

(b) Classification ✅

(c) Observation

(d) Separation  

3. Which of the following has a lustrous surface?

(a) Wood

(b) Paper

(c) Copper ✅

(d) Rubber  

4. Which material is generally soft?

(a) Iron

(b) Stone

(c) Sponge ✅

(d) Steel  

5. A material through which objects can be seen clearly is called:

(a) Opaque

(b) Translucent

(c) Transparent ✅

(d) Lustrous  

6. Which of the following is translucent?

(a) Wooden door

(b) Butter paper ✅

(c) Clear glass

(d) Iron sheet  

7. Which of the following is opaque?

(a) Air

(b) Clear glass

(c) Water

(d) Wood ✅  

8. Which of the following dissolves completely in water?

(a) Sand

(b) Sawdust

(c) Sugar ✅

(d) Chalk powder  

9. Which of the following is insoluble in water?

(a) Salt

(b) Sugar

(c) Glucose

(d) Sand ✅  

10. The property that tells us how heavy or light an object is related to its:

(a) Volume

(b) Mass ✅

(c) Colour

(d) Shape  

11. The SI unit of mass is:

(a) Gram

(b) Litre

(c) Kilogram ✅

(d) Millilitre  

12. The space occupied by matter is called:

(a) Mass

(b) Volume ✅

(c) Weight

(d) Density  

13. Which is the SI unit of volume?

(a) L

(b) mL

(c) m³ ✅

(d) kg  

14. Which of the following is matter?

(a) Air ✅

(b) Light

(c) Sound

(d) Shadow  

15. Which factor decides the material used for making an object?

(a) Its properties and purpose of use ✅

(b) Its name only

(c) Its colour only

(d) Its size only  

B. Fill in the Blanks 

1. A substance used to make an object is called a __________.

Answer: Material ✅

2. Arranging objects into groups based on common properties is called __________.

Answer: Classification ✅

3. Materials having shiny surfaces are called __________.

Answer: Lustrous ✅

4. Materials that can be compressed or scratched easily are called __________.

Answer: Soft ✅

5. Materials through which objects can be seen clearly are called __________.

Answer: Transparent ✅

6. Materials through which objects cannot be seen are called __________.

Answer: Opaque ✅

7. A substance that dissolves completely in water is called __________.

Answer: Soluble ✅

8. The quantity of matter present in an object is related to its __________.

Answer: Mass ✅

9. The space occupied by matter is called its __________.

Answer: Volume ✅

10. Anything that occupies space and has mass is called __________.

Answer: Matter ✅

These definitions follow the chapter's descriptions of material, classification, soluble/insoluble substances, mass, volume and matter.    

C. Match the Following

Column A                                             Column B                                         Answer

1. Lustrous                                             (a) Cannot be seen through                 1 – (c)

2. Transparent                                             (b) Dissolves in water                         2 – (e)

3. Opaque                                             (c) Shiny surface                                 3 – (a)

4. Soluble                                             (d) Space occupied by matter         4 – (b)

5. Volume                                             (e) Objects can be seen clearly         5 – (d)

Answers:  

1. (c) Shiny surface

2. (e) Objects can be seen clearly

3. (a) Cannot be seen through

4. (b) Dissolves in water

5. (d) Space occupied by matter

D. True or False 

1. A material is a substance used to make an object.

Answer: True ✅

2. Classification means arranging objects into groups based on common properties.

Answer: True ✅

3. All shiny materials are metals.

Answer: False ❌

Correct statement: Not all shiny materials are metals. Some materials can be made shiny by polishing or coating.

4. Iron is generally a hard material.

Answer: True ✅

5. Clear glass is transparent.

Answer: True ✅

6. Wood is generally opaque.

Answer: True ✅

7. Sugar is insoluble in water.

Answer: False ❌

Correct statement: Sugar is soluble in water.

8. Sand does not dissolve in water.

Answer: True ✅

9. Mass tells us about the quantity of matter.

Answer: True ✅

10. Matter occupies space and has mass.

Answer: True ✅

E. Very Short Answer Questions 

1. What is a material?

Answer: A material is a substance used to make an object.

2. What is classification?

Answer: Classification is the method of arranging objects or materials into groups based on common properties.

3. Give two examples of lustrous materials.

Answer: Iron and copper.

4. Give two examples of soft materials.

Answer: Sponge and eraser.

5. What is a transparent material?

Answer: A material through which objects can be seen clearly is called transparent.

6. What is an opaque material?

Answer: A material through which objects cannot be seen is called opaque.

7. What is a translucent material?

Answer: A material through which objects can be seen but not clearly is called translucent.

8. What is meant by soluble?

Answer: A substance that dissolves completely in water is called soluble.

9. Name the SI unit of mass.

Answer: Kilogram (kg).

10. What is volume?

Answer: Volume is the space occupied by matter.

F. Short Answer Questions 

1. Why do we classify materials?

Answer:- We classify materials to arrange them into groups according to their similarities and differences. Classification helps us study, compare and understand the properties of materials easily.     

2. Differentiate between lustrous and non-lustrous materials with examples.

Answer:

Lustrous                                             Non-lustrous

  • Have a shiny surface                     Do not have a shiny surface
  • Usually include metals                     Include materials such as wood and paper
  • Examples: iron, copper                     Examples: wood, rubber

3. What is the difference between hard and soft materials?

Answer:- Hard materials are difficult to compress or scratch, such as stone and iron. Soft materials can be compressed or scratched easily, such as sponge and eraser.    

4. Differentiate between transparent, translucent and opaque materials.

Answer:- - Transparent: Objects can be seen clearly through them. Example: clear glass.

- Translucent: Objects can be seen but not clearly. Example: frosted glass.

- Opaque: Objects cannot be seen through them. Example: wood.     

5. What is the difference between soluble and insoluble materials?

Answer:- Soluble materials dissolve completely in water, such as sugar and salt. Insoluble materials do not dissolve in water, such as sand and sawdust.    

6. Why is the choice of material important while making an object?

Answer:- The material is selected according to its properties and the purpose for which the object is to be used. For example, a tumbler should be made from a material capable of holding water.     

7. Explain the difference between mass and volume.

Answer:- Mass tells us the quantity of matter present in an object. Volume is the space occupied by matter. Mass is commonly measured in grams or kilograms, while volume is commonly measured in litres or millilitres.     

G. Long Answer Questions

1. Explain what materials are. Why are materials classified?

Answer:- A material is a substance used to make an object. Objects around us are made from different materials such as wood, paper, metal, glass, plastic and clay.

Materials are classified according to their common properties. Classification helps us arrange, compare and study materials easily. They may be classified according to properties such as colour, hardness, softness, lustre, transparency and solubility.     

2. Explain lustrous and non-lustrous materials. Are all shiny materials metals?

Answer:- Materials having shiny surfaces are called lustrous materials. Iron, copper, zinc and aluminium are examples.

Materials that do not have shiny surfaces are called non-lustrous materials. Paper, wood, rubber and jute are examples.

No, all shiny materials are not metals. Some materials can be made shiny by polishing or coating them with another material.     

3. Explain transparent, translucent and opaque materials with examples.

Answer:- Transparent: Materials through which objects can be seen clearly are transparent. Example: clear glass.

Translucent: Materials through which objects can be seen but not clearly are translucent. Examples: butter paper and frosted glass.

Opaque: Materials through which objects cannot be seen are opaque. Examples: wood, cardboard and metals.     C

4. What are soluble and insoluble materials? Explain with examples.

Answer:- A material that dissolves completely in water is called soluble. Sugar and salt are examples.

A material that does not dissolve in water is called insoluble. Sand, sawdust and chalk powder are examples.

Thus, when sugar is mixed with water, it disappears because it dissolves. Sand remains separate because it is insoluble.     

5. What is matter? Explain mass and volume.

Answer:- Anything that occupies space and has mass is called matter.

Matter has two important properties:

1. Mass: It tells us the quantity of matter present in an object. The units commonly used are gram (g) and kilogram (kg).

2. Volume: It is the space occupied by matter. Common units are litre (L) and millilitre (mL). The SI unit of volume is cubic metre (m³).

Therefore, mass and volume are important properties of matter.    

6. What properties would you consider while selecting materials for a chair, water container and cooking utensil?

Answer:- For a chair, we may consider:

- Hardness

- Strength

- Weight

- Comfort

- Ease of cleaning

For a water container, we need a material that:

- Can hold water

- Does not allow water to pass through easily

- Is strong and suitable for the purpose

For a cooking utensil, the material should be suitable for cooking and should have appropriate properties for its intended use.

Thus, the choice of material depends on its properties and the purpose of the object.     

7. Explain how properties of materials determine their uses.

Answer:- Different materials have different properties, so they are selected for different purposes.

- Iron is hard and strong, so it can be used for many strong objects.

- Glass is transparent, so it is useful for windows and containers where seeing the contents is helpful.

- Sugar is soluble in water, so it can be used in drinks.

- Wood is generally hard and opaque, so it can be used for furniture.

- Plastic can be useful for containers because it can be made into different shapes and is suitable for many everyday uses.

Thus, the properties of a material help us decide where and how it can be used.




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