IGCSE Physics Notes (0625)
12 free chapter notes with diagrams, worked examples and quizzes, plus night-before sheets.
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Physics is easier when every idea has a picture, a formula you can rearrange and an example you can copy. These chapter notes cover the Cambridge IGCSE Physics (0625) course, from measurement and motion to space physics. Each one opens with a 30-second summary and finishes with a quick quiz.
12 chapter notes
- 1Measurement & motionHow to measure properly, then the whole story of speed, acceleration and motion graphs — the topic that decorates every Paper 2 and Paper 4.~10 min read · Core + Extended
- 2Mass, weight & densityThe most mixed-up pair in physics — mass and weight — plus density, floating and the experiments you must be able to describe.~7 min read · Core + Extended
- 3Forces, moments & momentumEverything that pushes, pulls, turns and crashes — from springs and friction to see-saws and car safety.~10 min read · Core + Extended
- 4Energy, work & powerWhere energy is stored, how it moves, how fast, and how much is wasted — plus every energy resource you may be asked to compare.~11 min read · Core + Extended
- 5PressureWhy a knife cuts, why skis stop you sinking, and why a dam wall is thicker at the bottom — pressure in solids and liquids.~7 min read · Core + Extended
- 6Thermal physicsParticles explain everything here: states of matter, gas pressure, expansion, melting and boiling, and the three ways heat travels.~13 min read · Core + Extended
- 7Waves & soundWhat a wave really is, the wave equation v = fλ, reflection, refraction and diffraction, and everything about sound — loudness, pitch, echoes and ultrasound.~10 min read · Core + Extended
- 8Light & the EM spectrumMirrors, refraction, total internal reflection, lenses, colour — and all seven families of electromagnetic waves with uses, dangers and a mnemonic.~11 min read · Core + Extended
- 9Electricity & circuitsCharge, current, voltage and resistance made simple — then series and parallel circuits, power, cost of electricity and plug safety.~13 min read · Core + Extended
- 10Magnetism & electromagnetismMagnets and their fields, electromagnets, the motor effect, the d.c. motor, the a.c. generator and transformers — and how the grid delivers power.~11 min read · Core + Extended
- 11Nuclear physicsThe atom and nucleus, alpha, beta and gamma radiation, half-life calculations, decay equations, fission and fusion, and radiation safety.~11 min read · Core + Extended
- 12Space physicsDay, night, seasons and the Moon, then the Solar System, the life of stars, galaxies, redshift and the Big Bang.~12 min read · Core + Extended
Night-before sheets
- PDFIGCSE Physics Formula SheetEvery equation with formula triangles, units and worked examples, Core + Extended.
- PDFPhysics ATP Shortcuts (Paper 6)Precautions, sources of error, control variables and the 7-mark plan structure, practical by practical.
Frequently asked questions
Are these IGCSE Physics notes free?
Yes. Every chapter note is free to read online and to save as a PDF. They are free to share with friends, but not to sell.
Do the notes cover both Core and Extended?
Yes, in one note. Extended-only material carries an EXTENDED tag, so Core students can skip it.
Which syllabus do the notes follow?
Cambridge IGCSE Physics (0625).
How do I download a note as a PDF?
Tap Download PDF at the top of any note. The PDF file saves straight to your phone or computer, ready to print or revise offline.
How should I use these notes?
Read a chapter note, do the quick check, practise a paper with the Paper Generator, then finish with the night-before sheet.
Who writes the notes?
Riyaz Shaikh ("Riyaz Sir"), a Mumbai-based mentor with 15+ years of experience teaching IGCSE, IB and A Level one-to-one.
Message Riyaz Sir: one-to-one IGCSE Physics mentoring, online or in Mumbai.