IGCSE Physics (0625) – Complete Guide 2025 (Notes, Syllabus, Formulas, Past Papers)
Is Physics the one subject standing between you and straight A*s? You are not alone. For many students, Cambridge IGCSE Physics (0625) is the hardest science because it requires both mathematical precision and conceptual clarity.
Welcome to the Ultimate Guide to IGCSE Physics 2025. Whether you are struggling with the new Space Physics module or confusing your Right-Hand Grip Rule with Fleming’s Left-Hand Rule, this guide is your solution.
We have decoded the syllabus, analyzed examiners’ reports, and compiled the best resources to ensure you walk into that exam hall with total confidence.
1. The 2025 Syllabus Update: What’s New?
The 2023-2025 syllabus overhaul was significant. If you are using old textbooks (pre-2023), you might be studying the wrong things.
The Major Addition: Space Physics
For years, IGCSE Physics was just about Earth. Now, you must look to the stars. This new topic covers the Life Cycle of Stars, Red Shift, and the Big Bang Theory.
Key Concepts to Master:
The Earth: Rotational speed, day/night cycle.
The Solar System: Order of planets, accretion model.
Stars: Stable phase (Main Sequence) vs. Supernovae.
The Universe: Why galaxies are moving away from us (Red Shift).
Warning: This topic is purely theoretical. You cannot “calculate” your way out of it. You need precise notes.
👉 Get the Guide: Secrets to Mastering IGCSE Physics 0625 Syllabus for Sure A*
2. The Assessment Structure (Extended)
To secure an A* (9-1), you will likely take the Extended option. Here is the breakdown:
| Paper | Type | Duration | Weighting | The “A*” Strategy |
| Paper 2 | Multiple Choice | 45 mins | 30% | 40 Questions. You have ~1 min per question. Skip hard calculations and come back. |
| Paper 4 | Theory | 1h 15m | 50% | The heavy hitter. Show every working step, even if the answer is obvious. |
| Paper 6 | Alt. to Practical | 1 hour | 20% | Tests graph plotting, accuracy, and variable control. |
Need Lesson Plans? Teachers, we have done the work for you.
3. Formula Mastery: The Cheat Code
Physics is 40% formulas. If you memorize them, you get “free” marks. If you don’t, you lose everything. Use Magic Triangles to rearrange equations instantly.
Top 5 Formulas You Must Know:
Newton’s Second Law: $F = ma$
Ohm’s Law: $V = IR$
Density: $\rho = m/V$
Wave Speed: $v = f\lambda$
Electrical Power: $P = IV$ and $E = IVt$
4. Tackling the Hardest Topics
A. General Physics (Forces & Motion)
The confusion here often lies in graphs. You must know the difference between a Distance-Time Graph (gradient = speed) and a Speed-Time Graph (area under graph = distance).
B. Electricity & Magnetism
This is the #1 grade killer.
Series Circuits: Current is the same everywhere. Voltage splits.
Parallel Circuits: Voltage is the same across branches. Current splits.
Resource: Master Physics with the Right Tools and Expert Guidance
C. Waves & The EM Spectrum
You need to memorize the order of the Electromagnetic Spectrum. Use this mnemonic:
Raging Martians Invaded Venus Using X-ray Guns.
5. Practical Skills (Paper 6)
Paper 6 is the easiest place to lose “silly” marks.
Significant Figures: Always match the precision of the data given in the question.
Graphing: Use a sharp pencil. Plot points with small ‘x’ marks, not blobs.
Precautions:
Lens experiment: Perform in a dark room.
Thermal experiment: Stir water before reading temperature.
👉 Need Past Papers? Unlock Physics 5054/0625 Solutions & Past Papers
6. Recommended Resources
Don’t leave your revision to chance. Use resources that are specifically designed for the 2025 Cambridge Syllabus.
Best Notes: Physics 5054 & 0625 Notes & Worksheets
Syllabus Mastery: Unlock IGCSE Physics 0625 Syllabus Mastery
University Check: The Ultimate Guide to IBCC Equivalence Calculator
Final Words: Physics is Logic
Physics is not about memorizing a textbook; it is about looking at the world and understanding the rules that govern it. Once you master the formulas and the definitions, the exam becomes a logic puzzle that you can solve every time.
*Start your journey to an A today.**
