Why does a soda not freeze in vending machine?

This is a common misconception. Soda does freeze in vending machines, but the temperature inside the machine is carefully controlled to prevent it from freezing solid. The ideal temperature for a vending machine is between 35 and 40 degrees Fahrenheit. This is cold enough to keep the soda from spoiling, but not so cold that it will freeze.

In addition to the temperature, the vending machine also uses a circulation fan to keep the air inside moving. This helps to distribute the cold air evenly and prevents the soda from freezing in one spot.

Finally, the vending machine may also have a heating element that turns on if the temperature inside the machine drops too low. This helps to ensure that the soda never freezes, even in the coldest weather.

So, while it is possible for soda to freeze in a vending machine, it is very unlikely. The temperature inside the machine is carefully controlled to prevent this from happening.