Watch dough expand, compare heating and cooling, and follow the chemistry and structure of everyday food. Separate what a model explains from what a recipe needs.
Interactive explorationTilt a plate, press a sample, and tug the connections that help a cooked egg hold together. Inspect a real ovalbumin structure, compare source-defined laboratory holds, and uncover what an experimental photograph actually shows.
Interactive explorationMatch two kinds of fiber to the microbes that can use them. Look through a bacterial surface, inspect a real enzyme holding a sugar chain, and sort the different kinds of products that microbes can make.
Interactive explorationSlice into two teaching doughs, follow gas as it is made, kept or lost, and discover the microbes and chemistry behind rising bread. Inspect real microscopy and a yeast enzyme.
Interactive explorationSee through a closed microwave, follow a bite around the turntable, and compare where energy arrives with where heat spreads afterward.
Interactive explorationLook through a cold room and follow its refrigerant loop. Count the heat removed and the work added, then try putting both sides in the same room.
Interactive explorationGive water an energy budget. Watch its temperature and phase masses, catch a melting plateau, compare two starting states and inspect an open ice structure.
Interactive explorationCompare a hundredfold difference, transfer a tiny aliquot, turn a virtual burette and uncover why a weak acid and a strong acid reach different pH values at equivalence.
Interactive explorationFollow a meal through the gut, then zoom into its lining. Choose starch, protein or long-chain fat and discover why their next routes differ.
Take these steps at your own pace. Your place is not saved as account progress or scored.