Atomic structure, nuclear notation and models
Relate proton/neutron/electron counts to atomic/mass number, charge and identity
Learn free: Count particles without changing the elementChemistry → Senior Secondary / GCSE / IGCSE / HS → Atomic Structure & Periodicity
Electron arrangement, valence electrons and ion formation
LESSON IN PREPARATIONConnect electron arrangement to group position, ion formation and chemical behaviour
Start with the right foundation.
- C02 atomic structure
Curriculum context: Cross-system core · Global / learner-fit
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Ionic bonding, lattices and properties
Explain ionic formation and bulk properties from lattice structure and electrostatic attraction
Learn free: Charged particles need a path to conductParticle model, states of matter and diffusion
Use particle arrangement/motion to explain bulk state changes and diffusion
Learn free: The particles do not meltChemical equations, state symbols and conservation
Write/balance equations as conservation statements and interpret coefficients as particle/mole ratios
Learn free: Balance atoms, preserve the substancesRelative mass, molar mass and mass-mole-particle conversions
Move among mass, moles and particle count while preserving formula composition and units
Learn free: The mole connects a balance to particlesGet personal help with this topic.
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