Is the caffeine in mountain dew a compound?

Here's why:

* Compounds are formed when two or more different elements chemically combine in a fixed ratio.

* Caffeine has the chemical formula C8H10N4O2, meaning it's made up of the elements carbon (C), hydrogen (H), nitrogen (N), and oxygen (O).

Therefore, caffeine is a compound because it is made up of multiple different elements chemically bonded together.