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Syllabus

Atoms and Molecules — Syllabus

Madhya Pradesh Board · Class 9 · Science

What Atoms and Molecules covers in Madhya Pradesh Board Class 9 Science: 4 topics, for the 2026-27 session. Topics include Historical Background and Laws.

29 questions24 flashcards5 concepts

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An infographic summarizing the key postulates of Dalton's Atomic Theory, which laid the foundation for modern chemistry.
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4 Topics · Madhya Pradesh Board Class 9 Science · 2026-27

Topics in Atoms and Molecules

1

Historical Background and Laws of Chemical Combination

  • Ancient Indian philosopher Maharishi Kanad (500 BC) proposed the concept of 'Parmanu' - smallest indivisible particles
  • Greek philosophers Democritus and Leucippus called indivisible particles 'atoms' (meaning indivisible)
  • Antoine Lavoisier established the foundation of chemical sciences through experimental work
2

Dalton's Atomic Theory

  • John Dalton (1766-1844) provided the first scientific atomic theory
  • Theory explained both laws of chemical combination through atomic concepts
  • Six main postulates form the foundation of atomic theory
3

Atoms - Structure and Properties

  • Atoms are extremely small - millions stacked would be as thick as paper
  • Atomic radius measured in nanometers (1 nm = 10⁻⁹ m)
  • Each element has unique symbols following IUPAC conventions
4

Molecules and Their Types

  • Molecules are groups of two or more atoms bonded together
  • Can be formed from same element atoms or different element atoms
  • Atomicity refers to number of atoms in a molecule

Key Concepts

Two fundamental laws govern chemical reactionsJohn Dalton proposed that all matterAtoms are extremely small particles (radiusMolecules are groups of atoms heldIons are charged particles formed when

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Frequently Asked Questions

What are the important topics in Atoms and Molecules for Madhya Pradesh Board Class 9 Science?
Key topics in Atoms and Molecules include Historical Background and Laws of Chemical Combination, Dalton's Atomic Theory, Atoms - Structure and Properties, Molecules and Their Types. Study these first, then practise questions on each for Class 9 exams.
How should I revise Atoms and Molecules for Class 9 exams?
Learn the core ideas first, then work through the 29 practice questions on Atoms and Molecules. 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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