Sodium chloride (NaCl), or table salt, does not make water temperature colder. In fact, dissolving salt in water actually raises the temperature slightly.

Here's why:

* Dissolving is an exothermic process: When salt dissolves in water, it releases a small amount of heat into the surrounding water. This is because the energy required to break apart the salt crystals (endothermic process) is slightly less than the energy released when the salt ions interact with the water molecules (exothermic process).

* The temperature change is negligible: The heat released during salt dissolution is very small, and the overall temperature change is usually not noticeable.

* The effect of salt on freezing point: Salt does lower the freezing point of water, making it harder for water to freeze. This is why salt is used on roads and sidewalks in winter. However, this is not the same as making the water colder.

In summary: Dissolving salt in water releases a small amount of heat, causing a slight increase in temperature. While salt lowers the freezing point of water, it does not make the water itself colder.