Tony, chemistry is where it's at. A reasonable chemistry knowledge is vital in many fields of work - medical, environmental, materials, earth science, astronomy to name a few. I think the assignment you did is quite advanced for high school; titrations was about as far as we went at school.
A shockingly high percentage of students enrolling in chemistry at uni have not done any high school chemistry and virtually no geology graduates who want to do geochemistry have done much chemistry at uni. In both cases they are well behind the 8-ball and have a lot of catching up to do. The knowledge you are gaining now will stand you in good stead for the rest of you life. (And IMHO it's actually a lot of fun.)
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