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Revision Notes

Metals and Non-Metals

NIOS · Class 10 · Science & Tech

Quick revision notes for Metals and Non-Metals — NIOS Class 10 Science & Tech. Key concepts, formulas, and definitions for last-minute revision.

44 questions34 flashcards5 concepts

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A comparative chart illustrating the key physical properties that differentiate metals and non-metals, such as malleability, ductility, luster, hardness, physical state, sonorous nature, density, and
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Key Topics to Revise

1

1. Physical Properties of Metals and Non-Metals

  • Metals are generally malleable, so they can be beaten into thin sheets.
  • Metals are generally ductile, so they can be drawn into wires.
  • Metals show metallic lustre and are usually shiny.
2

2. Chemical Properties of Metals and Non-Metals

  • Metals are electropositive and usually have 1, 2, or 3 valence electrons.
  • Metals lose electrons to form positive ions called cations.
  • Non-metals are electronegative and usually have 5, 6, or 7 valence electrons.
3

3. Reactions of Metals with Oxygen, Water, Acids, and Bases

  • Sodium, calcium, and potassium react with oxygen without heating.
  • Metals like magnesium, aluminium, and iron react on heating to form oxides.
  • Metal oxides react with water to form bases in some cases.
4

4. Corrosion, Rusting, and Prevention

  • Corrosion is the destruction of a metal surface by air and moisture.
  • Rusting is the corrosion of iron.
  • Rust is hydrated ferric oxide and appears as a brown powder.

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Key Concepts

Metals are generally malleableNonMetals are electropositive and generally haveMetals react with oxygen to formCorrosion is the destruction of

Frequently Asked Questions

What are the important topics in Metals and Non-Metals for NIOS Class 10 Science & Tech?
Key topics in Metals and Non-Metals include Classification and Properties of Elements, Metals and Non-Metals Chapter Overview, Metals and Non-Metals Classification Overview. These are the concepts NIOS Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Metals and Non-Metals — NIOS Class 10 Science & Tech?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and 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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