A focused three-component revision and exam practice pack for SP6c, covering the complete Edexcel Separate Science Physics specification for electron shells, absorption and emission of radiation, ionisation, and evidence for the Bohr model (P6.7, P6.8, P6.9, P6.17).

Topic Mastery Sheet covers the arrangement of electrons in fixed shells at set distances from the nucleus; the absorption process (electron absorbs a photon of the right energy → jumps to a higher energy level) and emission process (electron falls to a lower level → emits a photon of specific wavelength); the observation that each element has a unique emission spectrum due to its unique electron configuration - used as an element “fingerprint”; and ionisation - when an atom absorbs enough energy for an outer electron to escape completely, leaving a positive ion. The distinction between ionisation (change in electron number) and isotope formation (change in neutron number) is addressed directly as a common confusion.

Student Exam Practice Sheet includes a two-mark ionisation explanation question matching the Higher exam; a four-part electron shell and orbit question; and a particle-to-nature matching exercise covering beta, gamma, neutron and proton. Question format matches the Edexcel end-of-unit test style.

Teacher Answer Key provides a complete mark scheme specifying that the ionisation explanation requires both the energy transfer to the electron and the electron escaping the atom (forming an ion) for both marks.

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