The time required to turn a 16.9 fl oz bottle of liquid into instant ice by placing it in a freezer can vary depending on several factors, including the initial temperature of the liquid, the freezer's temperature, and the efficiency of the freezer. However, it's important to note that achieving instant ice formation by slamming the bottle on a table is not guaranteed, even under ideal conditions.
That being said, if we assume that the liquid in the bottle is at room temperature (70 degrees Fahrenheit) and you want to place it in a freezer set to 2 degrees Fahrenheit, it would generally take several hours for the liquid to completely freeze. The exact time required can vary and may be influenced by factors such as the thickness of the bottle, the insulation of the freezer, and the specific characteristics of the liquid being frozen.
To maximize the chances of achieving rapid freezing, it's recommended to ensure that the freezer is set to its coldest temperature and that the bottle is made of a material that facilitates quick heat transfer, such as glass. However, it's important to exercise caution when handling frozen bottles, as slamming them on a table can potentially cause breakage or injury.
Keep in mind that the concept of "instant ice" is often associated with special conditions and supercooling, which involves cooling a liquid below its freezing point without solidification. Achieving supercooling and inducing instant ice formation can be unpredictable and require precise control of various factors, which may not be achievable in a regular freezer.