Yes that is precisely what it measure, but Chemistry teachers confidently taught me the pH scale over and over again like an an arbitrary continuum to memorize until I finally had it framed in a perspective that illuminated the central role of water.

Yes technically if you just learn the pH scale you should be able to conclude that I guess but sorry not sorry most chemistry I have dealt with is completely ignorant of the power of teaching people big ideas. Everything is fiddly, disconnected and full of little memorization rules that feel utterly arbitrary in chemistry.

If my geology professors had taught chemistry they would have started with big ideas like that, but chemists taught me chemistry.