An interactive exploration of electronegativity, bond polarity and molecular polarity for A-level Chemistry. Students compare Pauling values, investigate periodic trends and switch between dot-and-cross representations, electron clouds and rotatable molecular models. Whole-molecule charge maps show electron-rich and electron-poor regions, while animated charge-centre constructions explain why bond dipoles cancel or produce an overall dipole. Any two examples can be compared side by side, with prediction questions and explanatory feedback supporting classroom discussion and independent learning. simopsis