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Metals and Non-metals — Revision Notes

CBSE · Class 10 · Science

Metals and Non-metals revision notes for CBSE Class 10 Science: 4 topics in quick points. Part of the CBSE Class 10 Science syllabus.

75 questions80 flashcards6 formulas & key relations5 concepts

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A diagram showing the setup for electrolytic refining of copper, with an impure copper anode, a pure copper cathode, and copper sulfate solution as the electrolyte. Illustrates the dissolution of impu
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Key Topics to Revise

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1. Physical Properties of Metals and Non-metals

  • Metals, in their pure state, have a shining surface. This property is called metallic lustre.
  • Metals are generally hard, but hardness varies from metal to metal.
  • Alkali metals such as sodium and potassium are so soft that they can be cut with a knife.
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2. Chemical Properties of Metals

  • Metals combine with oxygen to form metal oxides.
  • General metal-oxygen reaction: Metal + Oxygen → Metal oxide.
  • Most metal oxides are basic in nature.
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3. Ionic Compounds and Their Properties

  • When a metal transfers electrons to a non-metal, ionic compounds are formed.
  • Sodium forms Na+ by losing one electron.
  • Magnesium forms Mg2+ by losing two electrons.
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4. Occurrence, Extraction, Refining, and Corrosion

  • The earth's crust is the major source of metals.
  • Elements or compounds occurring naturally in the earth's crust are called minerals.
  • Minerals from which metal can be profitably extracted are called ores.

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Full Notes

Key Concepts

Metals are generally hardNonMost metals combine with oxygenPotassium and sodium react violentlyMetals generally react with dilute acids

Frequently Asked Questions

What are the important topics in Metals and Non-metals for CBSE Class 10 Science?
Key topics in Metals and Non-metals include Physical Properties of Metals and Non-metals, Chemical Properties of Metals, Ionic Compounds and Their Properties, Occurrence, Extraction, Refining, and Corrosion. Study these first, then practise questions on each for the CBSE Class 10 board exam.
How should I revise Metals and Non-metals for the CBSE Class 10 board exam?
Learn the core ideas first, then work through the 75 practice questions on 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.

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