Chemical exchange is a very lightweight progression/questing modpack based around the mods Alchemistry and ProjectE. This pack puts a new spin on the typical ProjectE experience; in this modpack the only items you can exchange with the transmutation capabilities of ProjectE are chemical elements (oxygen, hydrogen, iron, etc). The general progression of this pack draws inspiration from my other modpack Antimatter Chemistry, so if you've played that pack this pack may feel like a condensed version of it.
Looking for an easy way to host a Chemical Exchange server? Check out Akliz server hosting, they have one-click installation available for this pack.