Metals and Non Metals — Chapter Summary
ICSE · Class 7 · Chemistry
Summary of Metals and Non Metals for ICSE Class 7 Chemistry. Key concepts: Metals are generally lustrous, Non and Metalloids show some.
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Overview
Elements are basic pure substances made of only one kind of atom. They are commonly grouped into metals, non-metals, metalloids, and inert gases. Metals such as iron, aluminium, copper, gold, silver, zinc, tin, mercury, magnesium, lead, platinum, and tungsten are widely used in daily life because th
Key Concepts
Metals are generally lustrous
Metals are generally lustrous, hard, malleable, ductile, sonorous, and good conductors of heat and electricity. Most metals are solids at room tempera
Non
Non-metals are usually dull, brittle, non-sonorous, and poor conductors of heat and electricity. They may be solids, liquids, or gases. Oxygen and nit
Metalloids show some properties of metals
Metalloids show some properties of metals and some properties of non-metals. Common metalloids include boron, silicon, arsenic, antimony, germanium, t
Inert gases are colourless
Inert gases are colourless, non-metallic gases that are chemically unreactive. Helium, neon, argon, krypton, xenon, and radon are inert gases. Helium
Rust is hydrated ferric oxide
Rust is hydrated ferric oxide, written as Fe₂O₃·xH₂O. Iron rusts slowly when both air and moisture are present. The rust is flaky and basic in nature,
Learning Objectives
- Distinguish metals and non-metals by their physical properties
- Identify common examples of metals, non-metals, metalloids, and inert gases
- Recall important uses of metals and non-metals in daily life
- Understand corrosion and rusting of iron
- Learn methods used to prevent rusting
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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