Class 9 · Science · Chapter 9

Atomic Foundations of Matter

NCERT Class 9 Science Chapter 9, Atomic Foundations of Matter — 22 pages, 6.5 MB. Read it below or download the PDF.

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What “Atomic Foundations of Matter” begins with

Atomic Foundations of Matter Chapter 9 In Chapter 8, Journey Inside the Atom, you explored the structure of the atom. You also studied subatomic particles, viz., electrons, protons and neutrons, in terms of their discoveries, properties and locations in the atom. You also learnt that atoms with an octet of electrons in their valence shell are stable.

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How many pages is NCERT Class 9 Science Chapter 9 "Atomic Foundations of Matter"?

22 pages in the 2026–27 NCERT textbook.

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