Chemistry · A-Level · AQA · AQA A-level Chemistry - (7405) · Specification point · 3.1.1.1 · Physical chemistry · Atomic structure
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3.1.1.1 Fundamental particles
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Appreciate that knowledge and understanding of atomic structure has evolved over time. Protons, neutrons and electrons: relative charge and relative mass. An atom consists of a nucleus containing protons and neutrons surrounded by electrons. |