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Materials: Metals and Non Metals Class 8 Science NCERT

person icon Prabh Kirpa Classes

Materials: Metals and Non Metals Class 8 Science NCERT

Materials: Metals and Non Metals Class 8 Science NCERT

updated on icon Updated on Sep, 2023

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person icon Prabh Kirpa Classes

architecture icon 8th Class,Science,Teaching & Academics

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Course Description

Q.1. Which of the following can be beaten into thin sheets? 

(a) Zinc             (b) Phosphorus 

(c) Sulphur          (d) Oxygen


Q. 2.  Which of the following statements is correct? 

(a) All metals are ductile. 

(b) All non-metals are ductile.                                            

(c) Generally, metals are ductile. 

(d) Some non-metals are ductile.

3. Fill in the blanks. 

(a) Phosphorus is a very _________ non-metal.

(b) Metals are conductors of heat and ________.

(c) Iron is _________reactive than copper.

(d) Metals react with acids to produce ______ gas.

4. Mark ‘T’ if the statement is true and ‘F’ if it is false. 

(a) Generally, non-metals react with acids. 

               (b) Sodium is a very reactive metal.

               (c) Copper displaces zinc from zinc                sulphate solution.

(d) Coal can be drawn into wires.

Q. 5. Some properties are listed in the following table. Distinguish between metals and non-metals based on these properties.

Q. 6. Give reasons for the following. 

(a) Aluminium foils are used to wrap food items. 

(b) Immersion rods for heating liquids are made up of metallic substances.

            (c) Copper cannot displace zinc from its             salt solution. 

(d) Sodium and potassium are stored in kerosene.

Q. 7. Can you store the lemon pickle in an aluminum utensil? Explain. 

Q.8. Match the substances given in Column A with their uses given in  Column B. 

Q. 9. What happens when 

(a) Dilute sulphuric acid is poured on a copper plate? 

(b) Iron nails are placed in copper sulfate solution? 

Write word equations of the reactions involved.

Q. 10. 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.

Q. 11. One day Reeta went to a jeweller’s shop with her mother. Her mother gave old gold jewellery to the goldsmith to polish. The 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 of weight?

Goals

What will you learn in this course:

  • The aim of the course is to ensure that the students are able to understand the topic of Metals and Non-Metals in a very easy manner.

Prerequisites

What are the prerequisites for this course?

  • NIL
Materials: Metals and Non Metals Class 8 Science NCERT

Curriculum

Check out the detailed breakdown of what’s inside the course

Materials: Metals and Non Metals Class 8 Science NCERT
5 Lectures
  • play icon Introduction 03:18 03:18
  • play icon Which can be beaten into thin sheets, which is correct statement, Fill in Blanks 06:21 06:21
  • play icon True/False, Distinguish between metals & non metals, Reasons for certain facts 05:08 05:08
  • play icon Reasoning questions in respect of aluminium foils, immersion rods, lemon pickle 05:29 05:29
  • play icon Nature of gas on burning charcoal, Weight loss in jewellery after polishing etc. 10:11 10:11

Instructor Details

Prabh Kirpa Classes

Prabh Kirpa Classes

This channel is purely education based. Our aim is to ensure that the students are able to understand each and every question in an easy way.  We take pride in providing quality educational services to the students of Class VII to Class XI  Science NCERT, English, Computer Solutions, Mathematics & Business Studies.  Our goal is to help the leaders of tomorrow to learn to succeed today.

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