If I have some hot food (like some leftover dinner) that I want to save, I put it in a sealed container and put it in the fridge. I've noticed that if I seal the container while the food is still hot and then put it in the fridge, the container lid gets stuck on really tight after it's been cooled (because the drop in temperature means a drop in pressure if the lid is strong enough to resist changes in volume).
To prevent that from happening, I put the hot food in the container, but I don't seal it yet. Of course, I don't want the food just sitting there open, so I loosely put the lid on to cover it, but it's not on there airtight. After it cools for a while, I then seal the lid and put it in the fridge.
How do we describe the process that the air inside the container goes through as it cools, during the time that it's on the counter with the loosely fitting lid? Isothermal, isovolumetric, adiabatic, isobaric, or some combination of two or more of these?
If I have some hot food (like some leftover dinner) that I want to save, I put it in a sealed container and put it in the fridge. I've noticed that if I seal the container while the food is still hot and then put it in the fridge, the container lid gets stuck on really tight after it's been cooled (because the drop in temperature means a drop in pressure if the lid is strong enough to resist changes in volume).
To prevent that from happening, I put the hot food in the container, but I don't seal it yet. Of course, I don't want the food just sitting there open, so I loosely put the lid on to cover it, but it's not on there airtight. After it cools for a while, I then seal the lid and put it in the fridge.
How do we describe the process that the air inside the container goes through as it cools, during the time that it's on the counter with the loosely fitting lid? Isothermal, isovolumetric, adiabatic, isobaric, or some combination of two or more of these?
