Home chemistry The Particle Box: Kinetic Molecular Theory Heat, squeeze, and cool a live box of atoms to watch pressure, the speed distribution, and even melting and boiling emerge from the collisions. Kinetic theory you can play with. Everything you see is measured live from the colliding particles. Drag the controls and watch the pressure, the speed curve, and the state of matter respond. Each dot is an atom; its colour shows its speed (blue = slow → yellow = fast). The indigo bar is a movable piston. Temperature and pressure are in the model's own relative units (proportional to the real quantities, not °C/K or pascals); 0 temperature is absolute zero. Speed distribution (Maxwell–Boltzmann) bars = measured · curve = theory · slides right as you heat · 2D ⇒ Rayleigh form (starts at zero) Pressure vs Volume (trace as you change volume) volume → · pressure ↑ · drag Volume at fixed Temperature A 2D teaching model in relative units, but the physics is real.…