If you're wanting a fundamentals-oriented introduction to chemistry, "Why Chemical Reactions Happen" is highly recommended, generally aimed at senior-level school kids who are considering specialising in chemistry at university, and which aims to give a sense of how the subject changes when you approach it with more rigour.

1. https://global.oup.com/ukhe/product/why-chemical-reactions-h...

2. https://www.amazon.com/Chemical-Reactions-Happen-James-Keele...