2. a thermodynamic process that maintains a constant volume is called an isochoric process. during these types of processes, the gas does no work because it is not increasing the volume of the container. if you sealed off the top of a water bottle and shook 100 ml of water for two minutes, you would find that the water is warmer when you take a drink. if you shook the water long enough to raise the water’s temperature 5 ºc, what is the change in internal energy of the system