GCSE Physics
Particle Model of Matter
Particle Model of Matter is a core strand in Physics. Work through the topics below in any order, or follow your course — each guide includes explanations, common mistakes and exam-style practice.
Topic guides
Density (GCSE)
Density is a measure of how much mass is packed into a certain volume.
Open guideStates of Matter
Matter exists in three main states: solid, liquid, and gas.
Open guideInternal Energy
Internal energy is the total energy that the particles of a substance have.
Open guideSpecific Latent Heat
Specific latent heat is the energy required to change the state of 1kg of a substance without any change in temperature.
Open guideParticle Motion & Pressure
The particles in a gas (atoms or molecules) are in constant, random motion.
Open guideGas Pressure & Temperature
For a fixed mass of gas at a constant volume, the pressure is directly proportional to the absolute temperature (in Kelvin).
Open guide
Revision strategy
Students often slip on the details explained in our guides — read the “common mistakes” section in each topic.
- Alternate between reading a guide and doing timed questions — don’t only re-read notes.
- Return to this hub anytime; new guides appear automatically as we publish them.