Putting a can of pop (or soda) sideways in the freezer can affect how quickly it gets cold due to the different thermal conductivity of the liquid inside the can and the surrounding air in the freezer.
When you place a can of pop upright in the freezer, the liquid inside the can is in direct contact with the colder surfaces at the top and bottom of the can. Heat from the liquid transfers to the colder can surfaces, and then the can transfers the heat to the surrounding air in the freezer. This process allows for faster heat exchange, and the liquid inside the can cools down more quickly.
On the other hand, if you put the can sideways in the freezer, only a small portion of the liquid is in direct contact with the colder surfaces of the can (the sides). The majority of the liquid is insulated by the air inside the can. As a result, the heat exchange is slower, and the liquid takes more time to cool down compared to when the can is upright.
Moreover, when the can is placed sideways, there's a possibility of uneven cooling due to convection currents within the liquid. Some parts of the liquid might cool faster than others, leading to inconsistent temperature distribution within the can.
In summary, putting a can of pop sideways in the freezer will likely slow down the cooling process compared to placing it upright, as less liquid comes in contact with the colder surfaces, and the heat exchange is less efficient. If you want to cool a can of pop quickly, it's best to keep it upright in the freezer. However, always be cautious about leaving a carbonated beverage in the freezer for too long, as it may expand and potentially cause the can to burst or the liquid to freeze and create a mess when opened.