Download Chem Lib Mod [1.15.1/1.15.2]

Chem Lib 1.15.2/1.14.4 is a simple mod that adds plenty of chemistry-related items including:

All 118 elements
Ingots for all elements that make sense (i.e. all except for gases, mercury, iron, gold, etc)
Several dozen chemical compounds, including several “drugs” that have potion effects when consumed

Chem Lib mod is a technical library that adds some code to the game for other mods, as well as 118 chemical elements that use other mods. The mod itself will be virtually useless, but without it, mods that require these elements will not work.