This topic is included in Paper 1 (Foundation) or Paper 3 (Higher) for GCSE OCR (A) Physics.
Notes:
*Watch this space* notes are being proofread as we speak, they should be up in a few weeks
Flashcards:
1.1 The Particle Model
1.2 Changes of State
1.3 Pressure
Questions by Topic:
Changes of State MS
Changes of State QP
The Particle Model MS
The Particle Model QP