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Water — Syllabus

ICSE · Class 6 · Chemistry

What Water covers in ICSE Class 6 Chemistry: 4 topics, for the 2026-27 session. Part of the ICSE Class 6 Chemistry syllabus.

50 questions30 flashcards5 concepts

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4 Topics · ICSE Class 6 Chemistry · 2026-27

Topics in Water

1

1. Introduction to Water

  • Water is a compound made of hydrogen and oxygen with the chemical formula H₂O.
  • It was once thought to be an element, but Henry Cavendish proved it is a compound in 1781.
  • One molecule of water contains 2 hydrogen atoms and 1 oxygen atom.
2

2. Occurrence and States of Water

  • 70% of Earth's surface is covered with water, but only 1% is usable by living beings.
  • Water exists in three states: solid (ice), liquid (water), and gas (water vapour).
  • In nature, water is found in oceans (97%), glaciers (2%), and rivers/lakes/groundwater (1%).
3

3. Sources of Water

  • Main sources: Surface water (rivers, lakes, oceans), Underground water (wells, springs), Atmospheric water (rain).
  • Rainwater is the purest natural form of water.
  • Sea water is saline and not fit for drinking or irrigation.
4

4. Water as a Universal Solvent

  • Water can dissolve many solids, liquids, and gases, so it is called a universal solvent.
  • A solution has two parts: solute (substance dissolved) and solvent (liquid in which it dissolves).
  • Solutions are homogeneous mixtures.

Key Concepts

Central concept: Water

States of WaterSources of WaterWater CycleWater as a Universal SolventPhysical Properties of WaterPurification of WaterWater PollutionWater Conservation

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Frequently Asked Questions

What are the important topics in Water for ICSE Class 6 Chemistry?
Key topics in Water include Introduction to Water, Occurrence and States of Water, Sources of Water, Water as a Universal Solvent. Study these first, then practise questions on each for Class 6 exams.
How should I revise Water for Class 6 exams?
Learn the core ideas first, then work through the 50 practice questions on Water. 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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All ICSE Class 6 Chemistry Syllabus

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