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⚡ Atomic Structure

Spec 4.4 Paper 1 📗 Foundation

📋 Subtopics — click any to open full notes

The Structure of an Atom Spec 6.4.1.1 +

Mass Number, Atomic Number and Isotopes Spec 6.4.1.2 +

Development of the Model of the Atom Spec 6.4.1.3 +

Radioactive Decay and Nuclear Radiation Spec 6.4.2.1 +

Nuclear Equations Spec 6.4.2.2 +

Half-Lives and Radioactive Decay Spec 6.4.2.3 +

Radioactive Contamination Spec 6.4.2.4 +

Background Radiation Spec 6.4.3 (physics only) +

Uses of Nuclear Radiation Spec 6.4.4 (physics only) +

Nuclear Fission Spec 6.4.5.1 (physics only) +

Nuclear Fusion Spec 6.4.5.2 (physics only) +

💡 Click a subtopic title or the + button to open the full notes, quiz and examples.

📐 Key Equations

A = N/t (activity)

Count rate ÷ 2 per half-life

🔬 Triple Science Extensions

Background radiation

Uses of nuclear radiation

Nuclear fission

Nuclear fusion

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