I want to go to a medical school, but I'm not sure that my knowledge of chemistry will be enough. How and with which books are the best to start preparing in this subject?

If you want to go to ordinary honey (not Moscow State University, for example) for General Medicine and Pediatrics, then school chemistry at the basic level will be quite enough. Chemistry will have to go through only in the first year, and everything will not be difficult there, they will explain everything. In the second year, there will be biochemistry, but this is a different subject, with ordinary chemistry they only have similar names. In general, I advise you not to worry about it now, but it is better to have a good rest in the summer, or maybe learn the program of the first course in chemistry, start a little bit in advance - this will be more useful than hammering the school course.

The option is, of course, obvious, but take all the parts of the textbook at school and just read it and solve tasks + Agree with the chemistry teacher so that she checks them, i.e. every day the chapter-assignments-questions-checking by the teacher + from the second or third week start solving the collection of tasks in chemistry (at least what you know) for the exam in the same rhythm.

Any school textbooks and institute manuals for applicants and special schools.

I recommend: G.E. Rudzitis, F.G. Feldman Chemistry Grade 7-11.

Yu.V. Khodakov, D.A. Epshtein, R.A. Gloriozov Inorganic chemistry 7-8 and 9 grades.

L.А. Tsvetkov Organic Chemistry Grade 10.

I recommend taking old editions of these textbooks (published in the USSR), since they contain fewer errors and are of higher quality than their modern versions