This is a simulation of a calorimeter. q / w: colder / hotter temperature up / down arrows: move piston click clamp: fixes / unfixes piston click React: adds more particles that bond with the original particles to increase the temperature slowly (exothermic reaction)
Context is needed here to understand this simulation. Water is used to stabilize and control the temperature of the gas inside the calorimeter due to its high specific heat capacity. Whenever the temperature is different in the calorimeter than from the water, the water's temperature will change much less while still keeping the gas's temperature approximately constant. The Ideal Gas Law is PV = nRT, where: P --> pressure (Pascals) V --> volume (L) n --> number of moles of gas (mol) R --> gas constant T --> temperature (Kelvins) This simulator aims to show how this is followed in an "ideal" gas. The "unfixed" piston has weight and can be pushed up by the pressure of the gas particles. The fixed piston is not affected by these factors. The calorimeter is not perfect, however; sometimes, this simulation will sometimes allow particles to escape due to high pressures / temperatures.