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Courses
Physics A
Key Terms
Photon

GCSEOCRJ249

Photon

Key term for OCR GCSE Physics A, used in Radioactive emissions.

Definition

A discrete packet or quantum of electromagnetic radiation.

Exam Context

Photon appears in OCR GCSE Physics A revision content for Radioactivity, especially Radioactive emissions and Electron arrangement changes.

Radioactivity Radioactive emissions Electron arrangement changes

Study Pathways

Radioactivity

Radioactive emissions

Electron arrangement changes

Matter

Particle model

Development of the atomic model

Found in Revision Notes

Radioactivity

Electron arrangement changes

Radioactive emissions • Electron arrangement changes

Matter

Development of the atomic model

Particle model • Development of the atomic model

Related Key Terms

Alpha particle De-excitation Discrete energy levels Electromagnetic radiation Electron Electrostatic attraction Electrostatic neutrality Electrostatic repulsion

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