Choose what to do today · All GCSE topics · Teachers: teach this topic
Exam boards: organised to match AQA GCSE Physics and Combined Science, and just as useful for Edexcel, OCR and WJEC/Eduqas – the physics is the same, though a few details and Higher/Separate labels differ.
Ramped questions: 3 Particle Model equations
3 equations. Each page has 10 real-life ramped questions with full FIFA solutions. Every equation is given on the equation sheet in the exam.
Key: C+S = Combined and Separate | S only = Separate Physics only | HT = Higher tier only
- Density: ρ = m/V (C+S)
- Specific latent heat: E = mL (C+S)
- Gases: pV = constant (S only)
Notes and questions
📝 Notes and questions – Particle model
- States of matter and the particle model (C+S)
- Internal energy and changes of state (C+S)
- Particle motion in gases and gas pressure (C+S; volume and doing work S only)
Free exam-style questions on the Particle model
100 exam-style questions on 4.3 Particle model of matter with a full mark scheme — required practical 5, latent heat, heating curves and working scientifically.
✏️ Key diagrams to draw – Particle model
8 diagrams with step-by-step pencil-and-label instructions, including particle arrangements, heating curves, gas pressure and the density practical. Draw the Particle model diagrams
⚠️ Where students lose marks – Particle model
Common mistakes highlighted in recent AQA examiners’ reports, in our own words.
- Gas pressure – give the full particle explanation. Particles move faster → they hit the walls MORE OFTEN (more collisions per second) → each collision exerts a BIGGER FORCE → greater force per square metre → greater pressure. Gas particles don’t “vibrate faster”.
- “More collisions” isn’t enough. It must be more collisions per second (more frequent). Time matters.
- Changes of state (6-markers): compare the arrangement AND movement of the particles in both states. Then explain that during melting the temperature stays constant because the energy increases the particles’ potential energy (breaking bonds), while heating the liquid increases their kinetic energy. Top marks need both ideas.
- Specific latent heat: use the CHANGE in mass (the mass that melted or boiled away), not one of the mass readings.
- Specific heat capacity from a graph: read the correct temperature change for the time asked about – not the total change.
- Explaining why you wait before reading a thermometer: it’s so the thermometer reaches the temperature of the block – not so the block reaches room temperature.
- Uncertainty: half the range of the results. Write the maximum and minimum the right way round.
- Why repeat readings? To identify anomalies and calculate a mean. “In case I made a mistake” doesn’t score.
- Variables: the independent variable is what you change; the dependent variable is what you measure. Many students confused these with control variables.
📖 Key definitions: learn them on the Definitions page or play the definitions game.
More for Particle Model
📖 Learn: notes above · Key diagrams
🧮 Equations: all 3 listed above · Which equation? Particle model mixed
✏️ Activities: 45-minute activity: heating curve · 🎬 Particle Model in Film
🎮 Games: Solid, liquid or gas? · Key definitions · Equations and units · Changes of state · Heating ice to steam · True or false? · Spot the mistake · Fill the gap · All games
📝 Test yourself: Foundation test · Higher test · Quizzes · 6-mark questions
👩🏫 Teachers: Teach Particle Model lesson by lesson
✅ Check your understanding: the 17 things you must be able to do in the Particle model — a checklist of what full understanding looks like, with a link for each one.
📚 Everything for the Particle model
- More practice: Particle model mixed equation practice
- Revise: Fill the gaps: Particle model · Particle model mind map guide
- Lessons: Ice Road Truckers · Deep Sea Diver (S only)
- Practicals: Required practicals (density)
Comprehension articles
Read a real-world article, then answer exam-style questions (answers included):
🛒 Revising the Particle Model? Get every topic as a printable pack
Physics Focus Questions: every point of the AQA specification as a question, with the answer underneath. 8 booklets · 682 questions · all 10 required practicals · instant PDF download.
Doing Combined Science? Get the Trilogy pack (£14.99) instead.
👩🏫 Teachers: ready-to-teach Particle Model PowerPoint lessons are in the Complete Course Bundle (£49). Try the Energy lessons free first. For comic-style slides on every topic, see Physics Comics (£25).
✏️ Particle Model activity booklet: worksheets ready to print
One booklet for every topic, from Support to Stretch: worked examples, required practicals, exam-style questions and a full answer booklet. Works for GCSE Physics and Combined Science, in class, for homework or for revising at home.