Metals and Non-Metals — Syllabus
NIOS · Class 10 · Science & Tech
What Metals and Non-Metals covers in NIOS Class 10 Science & Tech: 4 topics, for the 2026-27 session. Part of the NIOS Class 10 Science & Tech syllabus.
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Topics in Metals and Non-Metals
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. 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. 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. 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.
Key Concepts
Central concept: Metals and Non-Metals
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