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Mole Concept and Stoichiometry

ICSE · Class 10 · Chemistry

Complete topic list for Mole Concept and Stoichiometry in ICSE Class 10 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.

38 questions36 flashcards5 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

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

Frequently Asked Questions

What are the important topics in Mole Concept and Stoichiometry for ICSE Class 10 Chemistry?
Mole Concept and Stoichiometry covers several key topics that are frequently asked in ICSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Mole Concept and Stoichiometry — ICSE Class 10 Chemistry?
Understand the core concepts first, then work through the 38 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.

More resources for Mole Concept and Stoichiometry

All 11 chapters — ICSE Class 10 Chemistry Syllabus

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