Physics · IGCSE · Cambridge · Cambridge IGCSE (9–1) Physics 0972 (Extended) (2026–2028) · Specification point · 5.1.1 · Nuclear physics · The nuclear model of the atom
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5.1.1 The atom
| Core | Supplement |
|---|---|
1 Describe the structure of an atom in terms of a positively charged nucleus and negatively charged electrons in orbit around the nucleus 2 Know how atoms may form positive ions by losing electrons or form negative ions by gaining electrons | 3 Describe how the scattering of alpha (α) particles by a sheet of thin metal supports the nuclear model of the atom, by providing evidence for: (a) a very small nucleus surrounded by mostly empty space (b) a nucleus containing most of the mass of the atom (c) a nucleus that is positively charged |