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Syllabus

Mole Concept and Stoichiometry — Syllabus

ICSE · Class 10 · Chemistry

What Mole Concept and Stoichiometry covers in ICSE Class 10 Chemistry: 4 topics, for the 2026-27 session. Part of the ICSE Class 10 Chemistry syllabus.

38 questions36 flashcards7 formulas & key relations5 concepts

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An illustration demonstrating Gay-Lussac's Law of Gaseous Volumes, showing that when gases react, they do so in volumes that bear a simple whole-number ratio to one another and to the volumes of the g
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4 Topics · ICSE Class 10 Chemistry · 2026-27

Topics in Mole Concept and Stoichiometry

1

Gas Laws and Standard Conditions

  • Boyle's law: volume is inversely proportional to pressure when amount of gas and temperature are constant.
  • Charles' law: volume is directly proportional to temperature when amount of gas and pressure are constant.
  • Gay Lussac's pressure-temperature law: pressure is directly proportional to temperature when amount of gas and volume are constant.
2

Gay Lussac's Law and Avogadro's Law

  • Gay Lussac's law of combining volumes was given in 1808.
  • When gases react, their volumes combine in simple whole number ratios if measured under identical conditions of temperature and pressure.
  • Example: hydrogen and chlorine react in the ratio 1:1:2 to form hydrogen chloride.
3

Atomicity of Elementary Gases

  • Atomicity is the number of atoms present in one molecule of a substance.
  • He, Ne, Ar and Kr are monoatomic molecules.
  • H2, O2, N2, Cl2 and Br2 are diatomic molecules.
4

Relative Atomic Mass, Average Atomic Mass and Mass of Atoms

  • Relative atomic mass compares the mass of an atom with a standard atom.
  • One atomic mass unit is 1/12 of the mass of an atom of C12.
  • In 1961, C12 was adopted as the standard for atomic mass unit scale.

Key Concepts

Central concept: Mole Concept and Stoichiometry

Gas lawsStandard conditionsGay Lussac's law of combining volumesAvogadro's lawAtomicity of gasesRelative atomic massRelative molecular massGram atomic mass and gram atomic mass of elements

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Frequently Asked Questions

What are the important topics in Mole Concept and Stoichiometry for ICSE Class 10 Chemistry?
Key topics in Mole Concept and Stoichiometry include Gas Laws and Standard Conditions, Gay Lussac's Law and Avogadro's Law, Atomicity of Elementary Gases, Relative Atomic Mass, Average Atomic Mass and Mass of Atoms. Study these first, then practise questions on each for the ICSE Class 10 board exam.
How should I revise Mole Concept and Stoichiometry for the ICSE Class 10 board exam?
Learn the core ideas first, then work through the 38 practice questions on Mole Concept and Stoichiometry. 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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