Particle model, states of matter and diffusion
Use particle arrangement/motion to explain bulk state changes and diffusion
Learn free: The particles do not meltChemistry → Senior Secondary / GCSE / IGCSE / HS → Matter, Particles & States
Select separation methods from property differences and distinguish physical from chemical change
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Request this lessonUse particle arrangement/motion to explain bulk state changes and diffusion
Learn free: The particles do not meltMove among mass, moles and particle count while preserving formula composition and units
Learn free: The mole connects a balance to particlesSeparation evidence with controlled comparison
Learn free: A chromatogram is evidence, not a barcodeRelate proton/neutron/electron counts to atomic/mass number, charge and identity
Learn free: Count particles without changing the elementExplain ionic formation and bulk properties from lattice structure and electrostatic attraction
Learn free: Charged particles need a path to conductA parent, guardian or adult learner can request a free initial fit conversation, subject to availability. This is an introductory discussion, separate from a paid tutoring session or formal diagnostic assessment.