I have a metal tin full of xenon, with a volume of 600cm3 at 20 celcius. I need to work out what will happen if I cool the tin to -40 celcius. I need to work out the new volume of the tin at this cooler temperature.
Firstly I need to decide whether the process is isothermal, isochoric or adiabatic.
My own conclusion is that the process cannot be isochoric because in an isochoric process the volume of the closed system remains constant.
In an isothermal process the temperature remains constant, and clearly here we also have a change of temperature. Hence I suspect it cannot be isothermal.
By process of elimination I am left with adiabatic, but I'd just like a helpful explanation as to why so, as my book isn't very comprehensive.
Please be patient with me, I'm a junior in high school taking early AP's and physics is still quite new to me.