Section 1
📖
Lecture & walkthrough
The complete written lesson — system & surroundings, internal energy & enthalpy, exo/endothermic reactions, enthalpy diagrams, standard enthalpy changes, Hess's law, calorimetry, bond energies and the first law.
12 sections · ~25 min read
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Section 2
🎬
Interactive lecture
As you scroll, a live D3 panel animates every idea: heat crossing the system boundary, exo/endo thermometers, enthalpy diagrams, the Hess's-law cycle, bond breaking/making, and an interactive calorimetry simulator where you set the mass & ΔT and read the heat q.
Same content · live D3 animation per section
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Section 3
⚗️
Practical experiment
Run a calorimetry experiment on a guided 3D bench: mix acid and base in an insulated cup, follow the temperature on the thermometer over time, then plot the T–t curve and work out ΔH. Tap any part of the apparatus for its name, explanation and an Ask AI button.
Guided · 3D apparatus + live T–t curve · part inspector
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