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The World of Metals and Non-metals — Chapter Summary

CBSE · Class 7 · Science

Summary of The World of Metals and Non-metals for CBSE Class 7 Science. Part of the CBSE Class 7 Science syllabus.

38 questions76 flashcards5 concepts

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Overview

Metals and non-metals are two important groups of elements found around us. They are identified by properties such as lustre, hardness, malleability, ductility, sonority, and the ability to conduct heat and electricity. Their behaviour with air and water also helps explain rusting, corrosion, and th

Key Concepts

Copper

Copper, aluminium, and iron are lustrous and hard, so they are metals. The shine shown by metals is called metallic lustre.

Malleability is the property by

Malleability is the property by which a material can be beaten into thin sheets. Most metals are malleable. Gold and silver are the most malleable met

Ductility is the property by

Ductility is the property by which a material can be drawn into wires. This property is mainly shown by metals.

Sonority is the property by

Sonority is the property by which metals produce a ringing sound when struck. Metal spoons, coins, and school bells show this property.

Conduction is the transfer of heat

Conduction is the transfer of heat from one point to another in a material. Metals are good conductors of heat and electricity, while wood and many no

Learning Objectives

  • Identify common metals and non-metals by their properties
  • Explain malleability, ductility, sonority, and conduction
  • Describe the effect of air and water on metals, especially iron
  • Understand rusting, corrosion, and ways to prevent rusting
  • Explain how metals and non-metals are used in daily life

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 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.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for The World of Metals and Non-metals

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