OCR GCSE Combined Science A · J250
Specification WS1.1b · Biology Paper 1, Biology Paper 2, Chemistry Paper 1, Chemistry Paper 2, Physics Paper 1, Physics Paper 2
Revise: Application of Scientific ModelsA spatial model emphasises positions and arrangements. A globe shows the Earth's overall shape and the relative positions of places. An atomic diagram shows a central nucleus with electrons arranged in shells around it.