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Some Basic Concepts of Chemistry — Syllabus

CBSE · Class 11 · Chemistry

What Some Basic Concepts of Chemistry covers in CBSE Class 11 Chemistry: 4 topics, for the 2026-27 session. Part of the CBSE Class 11 Chemistry syllabus.

169 questions72 flashcards4 formulas & key relations5 concepts

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4 Topics · CBSE Class 11 Chemistry · 2026-27

Topics in Some Basic Concepts of Chemistry

1

1. Nature of Matter and Its Classification

  • Matter is anything that has mass and occupies space.
  • Matter exists in three physical states: solid, liquid, and gas.
  • In solids, particles are closely packed and have little freedom of movement.
2

2. Measurement, Units, and SI System

  • Quantitative observation is written as a number with a unit.
  • The metric system originated in France in the late eighteenth century.
  • The SI system was established in 1960.
3

3. Scientific Notation, Significant Figures, Precision, and Accuracy

  • Scientific notation is written as N × 10^n, where 1.000... ≤ N < 9.999... and n is an exponent.
  • Scientific notation makes very large and very small numbers easier to handle.
  • In multiplication and division, powers of 10 are combined by addition and subtraction of exponents.
4

4. Laws of Chemical Combination

  • Chemical combination follows definite laws.
  • Law of Conservation of Mass was put forth by Antoine Lavoisier in 1789.
  • The law states that matter can neither be created nor destroyed.

Key Concepts

Central concept: Matter, its measurement, and the basic laws and quantities used to describe chemical change

Development of chemistryImportance of chemistryNature of matterProperties and measurementSI system and unitsScientific notation and significant figuresDimensional analysisLaws of chemical combination

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Frequently Asked Questions

What are the important topics in Some Basic Concepts of Chemistry for CBSE Class 11 Chemistry?
Key topics in Some Basic Concepts of Chemistry include Nature of Matter and Its Classification, Measurement, Units, and SI System, Scientific Notation, Significant Figures, Precision, and Accuracy, Laws of Chemical Combination. Study these first, then practise questions on each for Class 11 exams.
How should I revise Some Basic Concepts of Chemistry for Class 11 exams?
Learn the core ideas first, then work through the 169 practice questions on Some Basic Concepts of Chemistry. 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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