We use ions for a bunch of stuff like Li-ion batteries and various other chemical engineering marvels on a daily basis. I wonder how new is the idea of ions anyway?

Wikipedia has this to say: “Svante Arrhenius put forth, in his 1884 dissertation, the explanation of the fact that solid crystalline salts dissociate into paired charged particles when dissolved, for which he would win the 1903 Nobel Prize in Chemistry. Arrhenius' explanation was that in forming a solution, the salt dissociates into Faraday's ions, he proposed that ions formed even in the absence of an electric current.”

We’ve built so much on top an idea that’s only about 139 years old. Before that, it must have been pretty difficult or even impossible to explain large parts of chemistry we use every day.

I wonder how would you imagine the future of chemistry in the early 1800s? Could you imagine that nowadays we leach gold from a mineral that doesn’t even look golden at all? Could you imagine that we can pull aluminium from rocks that don’t even look metallic in any way? Could you imagine that we use it to build all sorts of things like cans, door frames and airplanes? What about surface coating of materials to give them corrosion resistance, different colors or scratch resistance. In the past 139 years we’ve done all sorts of absolutely wild things with ions.

If you start studying chemistry in 2023 you’ll probably hear about ions during the first lecture and later you’ll build all sorts of wonderful things on that bit of information.