If I put an air-tight container into the fridge, how do the contents still get cold?

Question

If I put an air-tight container into the fridge, how do the contents still get cold?

In: Chemistry

Answer 1

The warm air molecules inside the container strike the walls of the container itself, transferring some of their energy (and, thus, heat) to the container itself.

The cold air molecules outside the container strike the walls of the container and some of the energy (heat) from the container transfers to the air molecules outside of it.

Through this process, heat from inside the container makes its way outside the container, until all three are equalized.