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Syllabus-aligned learning for Secondary G1 to G3 Science and Chemistry, current G3 Pure Chemistry K324, legacy GCE O-Level Chemistry 6092, H1 8873, H2 9476, and H3 9813.

Maxwell–Boltzmann energy distributions at two temperaturesA lower-temperature curve has a taller peak at lower energy. A higher-temperature curve is lower, broader, and extends farther right. An activation-energy threshold marks the particles energetic enough to react. A second, lower threshold shows the effect of a catalyst.Eₐuncatalysedlower Eₐwith catalystlower temperaturehigher temperaturelarger fractionwith E ≥ EₐParticle energy, EFraction of particles per unit energySchematic: each curve has the same total area for the same number of particles.
Temperature redistributes particle energies; a catalyst lowers the activation-energy threshold.

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From particle energy to exam marks

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