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The World of Metals and Non-metals — Flashcards

CBSE · Class 7 · Science

76 flashcards for The World of Metals and Non-metals (CBSE Class 7 Science) to test yourself on key terms and facts.

38 questions76 flashcards5 concepts

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76 Flashcards·
Basic classificationमूल वर्गीकरणMetallic lustreधात्विक चमकMalleabilityनमनशीलताHammering metalsधातुओं को हथौड़े से पीटना
Card 1Basic classification

What are metals and non-metals?

Answer

Metals and non-metals are sub-categories of elements. An element is a substance that cannot be broken down into simpler substances.

Card 2मूल वर्गीकरण

धातु और अधातु क्या हैं?

Answer

धातु एवं अधातु तत्व की उपश्रेणियाँ हैं। तत्व वह पदार्थ है जिसे सरल पदार्थो में नहीं तोड़ा जा सकता है।…

Card 3Metallic lustre

Why do copper, aluminium, and iron look shiny?

Answer

They show metallic lustre. Lustre shown by metals is known as metallic lustre.

Card 4धात्विक चमक

तांबा, एल्युमीनियम और लोहा चमकदार क्यों दिखते हैं?

Answer

वे धात्विक चमक दिखाते हैं। धातुओं द्वारा दिखाई गई चमक को धात्विक चमक के रूप में जाना जाता है।…

Card 5Malleability

Why can a metal sheet be made by hammering iron or aluminium?

Answer

Because metals are malleable. Malleability is the property by which materials can be beaten into thin sheets.

Card 6नमनशीलता

लोहे या एल्युमीनियम को हथौड़े से पीटकर धातु की चादर क्यों बनाई जा सकती है?

Answer

क्योंकि धातुएँ आघातवर्धनीय होती हैं। आघातवर्धनीयता वह गुण है जिसके द्वारा पदार्थों को पीटकर पतली चादरें बनाई जा सकती हैं।…

Card 7Hammering metals

What happens when copper, iron, or aluminium is beaten with a hammer?

Answer

They flatten into sheets. This shows malleability, which is mainly seen in metals.

Card 8धातुओं को हथौड़े से पीटना

जब ताँबा, लोहा या एल्युमिनियम को हथौड़े से पीटा जाता है तो क्या होता है?

Answer

वे चादरों में चपटे हो जाते हैं। यह आघातनीयता को दर्शाता है, जो मुख्य रूप से धातुओं में देखा जाता है।…

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Frequently Asked Questions

What are the important topics in The World of Metals and Non-metals for CBSE Class 7 Science?
Key topics in The World of Metals and Non-metals include Identifying Metals and Non-metals, Important Properties of Metals, Important Properties of Non-metals, Behaviour of Metals and Non-metals with Heat, Electricity, Air, and Water. Study these first, then practise questions on each for Class 7 exams.
How many flashcards are available for The World of Metals and Non-metals?
There are 76 flashcards for The World of Metals and Non-metals covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise The World of Metals and Non-metals for Class 7 exams?
Learn the core ideas first, then work through the 38 practice questions on The World of Metals and Non-metals. Revise definitions regularly and use flashcards for quick recall before the exam.

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