Chemical equations, state symbols and conservation
Write/balance equations as conservation statements and interpret coefficients as particle/mole ratios
Learn free: Balance atoms, preserve the substancesChemistry → Senior Secondary / GCSE / IGCSE / HS → Chemical Formulae, Equations & Representation
Writing and naming chemical formulae
LESSON IN PREPARATIONTranslate reliably between names and formulae while preserving composition and accepted nomenclature
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- JEM-CH-C05-001
Curriculum context: Cross-system core · Global / learner-fit
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Chemical symbols, ions, charges and formula units
Construct neutral formulae and reason with oxidation numbers without confusing coefficients and subscripts
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 conductNeutralisation, ionic equations and acid reaction patterns
Predict common acid reactions and represent net ionic neutralisation/carbonate chemistry
Learn free: Neutralisation: follow the reacting ionsParticle model, states of matter and diffusion
Use particle arrangement/motion to explain bulk state changes and diffusion
Learn free: The particles do not meltGet personal help with this topic.
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