Why does it get cold when you mix cream of tartar and baking soda water?

The reaction of cream of tartar (potassium bitartrate) and baking soda (sodium bicarbonate) in water does not actually cause a decrease in temperature, making it feel cold.

Here's why:

* The reaction is endothermic, not exothermic: An endothermic reaction absorbs heat from the surroundings, which would make the solution feel colder. However, the reaction between cream of tartar and baking soda is actually mildly exothermic, meaning it releases a small amount of heat.

* Dissolving salts can feel cold: When you dissolve some salts in water, it can feel cold, but this is due to the process of dissolving itself, not a chemical reaction. The dissolving process requires energy, which it takes from the water, making the water feel colder.

* The sensation is likely due to a combination of factors: The overall sensation of coldness might be due to the dissolving of both cream of tartar and baking soda, along with the slight cooling effect from the slight endothermic reaction that happens when carbon dioxide is released.

In summary, the sensation of coldness when mixing cream of tartar and baking soda in water is not directly caused by a chemical reaction making the solution cold. Instead, it's likely a combination of the dissolving process and a small endothermic reaction.