BRAINCAKEParticle model of matter
Revision notes for Particle model of matter in AQA Physics (8463). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- Density of materialsThe density of a material tells you how much mass is packed into each unit of volume.
- Changes of stateA substance can change between solid, liquid and gas.
- Internal energyThe particles (atoms and molecules) that make up a substance are always moving, and they also have energy because of the forces between them.
- Temperature changes in a system and specific heat capacityWhen a system is heated, the rise in temperature depends on three things: the mass of the substance heated, the type of material, and the energy…
- Changes of state and specific latent heatWhen a substance melts or boils, the energy supplied changes the energy stored (the internal energy) but not the temperature.
- Particle motion in gasesThe molecules of a gas are in constant random motion.
- Pressure in gases (physics only)A gas can be compressed or expanded when its pressure changes.
- Increasing the pressure of a gas (physics only) (HT only)Work is the transfer of energy by a force.