🧪 Graveyard Potion Lab: Colour, pH & Reaction Rates

Brew four spooky-cute potions on a moonlit graveyard bench and learn why red cabbage changes colour: real pH, buffers, indicator colours, chalk fizz and temperature-driven fading, with a built-in self-test.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install