What is the purpose of a scientific model?
The modern atomic model has a nucleus of protons and neutrons, surrounded by electrons in shells.
The atom contains a tiny, dense, positively charged nucleus.
The plum pudding model had no nucleus; its charge was spread evenly.
A scientific model represents something that cannot be observed directly.
Flashcards for AQA GCSE Chemistry 1.1.3 The development of the model of the atom (common content with physics), covering the key terms, definitions and equations you need to recall for Paper 1 and Paper 2. 21 cards, matched to the AQA GCSE Chemistry (8462) specification. Recall questions account for roughly 40% of marks at GCSE Chemistry, so these target the marks you can secure before the paper starts.
