27/09/2026
⚛️ SPEC-tacular no. 5 | AQA 4.1.1.3 – The Development of the Model of the Atom
How did our model of the atom change as new evidence was discovered?
From Dalton’s solid sphere ➡️ Thomson’s plum pudding model ➡️ Rutherford’s nuclear model ➡️ Bohr’s electron shells.
This is exactly the kind of sequence you need to understand for GCSE Chemistry — not just who proposed each model, but WHY the model had to change.
📌 Save this for your mocks and share it with someone revising GCSE Science.