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Chapters
2: Microorganisms : Friend and Foe
3: Synthetic Fibres and Plastics
▶ 4: Materials : Metals and Non-metals
5: Coal and Petroleum
6: Combustion and Flame
7: Conservation of Plants and Animals
8: Cell - Structure and Functions
9: Reproduction in Animals
10: Reaching the Age of Adolescence
11: Force and Pressure
12: Friction
13: Sound
14: Chemical Effects of Electric Current
15: Some Natural Phenomena
16: Light
17: Stars and the Solar System
18: Pollution of Air and Water
![NCERT solutions for Science [English] Class 8 chapter 4 - Materials : Metals and Non-metals - Shaalaa.com](/images/9788174508126-science-english-class-8_6:f01f021682b543f590f4632481d5fb45.jpg "NCERT solutions for Science [English] Class 8 chapter 4 - Materials : Metals and Non-metals")
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Solutions for Chapter 4: Materials : Metals and Non-metals
Below listed, you can find solutions for Chapter 4 of CBSE NCERT for Science [English] Class 8.
NCERT solutions for Science [English] Class 8 4 Materials : Metals and Non-metals Exercises [Pages 53 - 55]
Which of the following can be beaten into thin sheets?
Zinc
Phosphorus
Sulphur
Oxygen
Which of the following statements is correct?
All metals are ductile.
All non-metals are ductile.
Generally, metals are ductile.
Some non-metals are ductile.
Fill in the blanks:
Phosphorus is a very _________ non-metal.
Fill in the blanks:
Metals are ________ conductors of heat and _________.
Fill in the blanks:
Iron is ________ reactive than copper.
Fill in the blanks:
Metals react with acids to produce _________ gas.
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Generally, non-metals react with acids. ( )
True
False
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
True
False
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Copper displaces zinc from zinc sulphate solution. ( )
True
False
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Coal can be drawn into wires. ( )
True
False
Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties
| Properties | Metals | Non-metals |
| 1. Appearance | Lustrous | Dull |
| 2. Hardness | Hard | Soft |
| 3. Malleability | Can be beaten into thin sheets | Cannot be beaten into thin sheets |
| 4. Ductility | Can be drawn into wires | Cannot be drawn into wires |
| 5. Heat Conduction | Good conductors of heat | Poor conductors of heat |
| 6. Conduction of Electricity | Good conductors of electricity | Poor conductors of electricity |
Give reasons for the following.
Aluminium foils are used to wrap food items.
Give reasons for the following.
Immersion rods for heating liquids are made up of metallic substances.
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
Give reasons for the following.
Sodium and potassium are stored in kerosene.
Can you store lemon pickle in an aluminium utensil? Explain.
Match the substances given in Column A with their uses given in Column B.
| A | B | ||
| 1 | Gold | a | Thermometers |
| 2 | Iron | b | Electric wire |
| 3 | Aluminium | c | Wrapping food |
| 4 | Carbon | d | Jewellery |
| 5 | Copper | e | Machinery |
| 6 | Mercury | f | Fuel |
What happens when Dilute sulphuric acid is poured on a copper plate?
Write word equations of the reactions involved.
What happens when Iron nails are placed in copper sulphate solution?
Write word equations of the reactions involved.
Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.
(a) How will she find the nature of the gas?
(b) Write down word equations of all the reactions taking place in this process.
One day Reeta went to a jeweller’s shop with her mother. Her mother gave an old gold jewellery to the goldsmith to polish. Next day when they brought the jewellery back, they found that there was a slight loss in its weight. Can you suggest a reason for the loss in weight?
Solutions for 4: Materials : Metals and Non-metals
NCERT solutions for Science [English] Class 8 chapter 4 - Materials : Metals and Non-metals
Shaalaa.com has the CBSE Mathematics Science [English] Class 8 CBSE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Science [English] Class 8 CBSE 4 (Materials : Metals and Non-metals) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Science [English] Class 8 chapter 4 Materials : Metals and Non-metals are Types of Element: Metals, Types of Element: Non-metal, Various uses of changes in physical state, Properties of substances, Physical Properties of Metals, Physical Properties of Non-metal, Chemical Properties of Metal, Chemical Properties of Non-metal.
Using NCERT Science [English] Class 8 solutions Materials : Metals and Non-metals exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE Science [English] Class 8 students prefer NCERT Textbook Solutions to score more in exams.
Get the free view of Chapter 4, Materials : Metals and Non-metals Science [English] Class 8 additional questions for Mathematics Science [English] Class 8 CBSE, and you can use Shaalaa.com to keep it handy for your exam preparation.
