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Skill route

Define atomic number and mass number

Skill routes are the cleanest place to connect curriculum structure with future assignment recommendations, public previews, and conversion moments.

Skill context

This route gives the skill a stable home inside the curriculum map.

Define atomic number and mass number

Atomic Number Mass and Valency

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Skill routes should feel close to action, not just classification.

24 questions

Final Assessment: Structure of an Atom

A chapter-end assessment covering subatomic particles, atomic models, electronic configuration, valency, isotopes, isobars, symbols and atom model applications.

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12 questions

Atomic Data: Number, Mass, Isotopes and Symbols

Students calculate protons, neutrons and electrons, interpret atomic notation, compare isotopes/isobars and practise first eighteen element symbols.

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