I still find it weird how sodium, a highly reactive element, and chlorine, a highly toxic element, can combine into something so mundane as salt.
ozone aka o3 is a corrosive and a poison while o2 is the air we all need. if you have ozone at ground level its an illegal/dangerous substance lol
chemistry is secretly an elaborate set of instructions on how to predict the elements as we know it. it just gives us a way to explain why certain things happen (eg why sodium blows up and o3 is so much more unstable than o2) but its just a description
you could probably come up with an entirely different way to describe chemicals/elements (past the basic sense) and maybe even come up with a simpler way to explain and group chemical phenomena.