Skip to main content
·5 chapters

Punjab Board Class 9 Science — Formula Sheet

Punjab Board Class 9 Science formula sheet, chapter by chapter — 6 formulas across 2 chapters. Follows the PSEB syllabus.

How to Use the Formula Sheet

  1. Write, don't just read — writing each formula out helps it stick.
  2. Understand the derivation — you can rebuild a formula you half-remember.
  3. Group related formulas — link the ones that build on each other.
  4. Test yourself — cover the sheet and write the formulas from memory.

Chapter-Wise Formulas — 2 Chapters

Melting (Fusion): Solid → Liquid. Melting point of ice = 273.15 K (0°C).
Boiling (Vaporisation): Liquid → Gas. Boiling point of water = 373 K (100°C).
The full Matter in Our Surroundings formula sheet
K-shell (n=1): maximum 2 electrons
L-shell (n=2): maximum 8 electrons
If valence electrons ≤ 4: Valency = number of valence electrons (electrons are lost or shared).
Niels Bohr proposed that electrons occupy only certain special orbits called discrete orbits or energy levels (K, L, M, N shells or n = 1, 2, 3, 4...)
The full Structure of the Atom formula sheet

Get chapter-wise help for Punjab Board Class 9 Science

Super Tutor gives you chapter summaries, revision notes, practice quizzes and flashcards, organised around the Punjab Board syllabus. Free to start.

Try Super Tutor free

Frequently Asked Questions

Where can I find Punjab Board Class 9 Science Formula Sheet?

This page has formula sheet for 2 chapters of Punjab Board Class 9 Science for the 2026-27 session. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Learn the formulas you use most first, and understand what each symbol means so you can apply them. Knowing where a formula comes from helps you rebuild it if you forget it in the exam.

Browse Formula Sheet by Chapter

2 chapters

More Science Resources

Punjab Board Class 9

Other Punjab Board Class 9 Subjects