LACs can be good for science, but it depends on the LAC and the science. One disadvantage to LACs (and I love them) is the more limited course offerings; larger research universities usually have large faculties who can teach a wider variety of courses in their specialty area, whereas LACs typically offer the foundational courses and perhaps a few unique seminars. I agree with @MomOnALaptop that you should check out the course catalog and see what kinds of courses are offered - but ALSO look at the school’s online class listing (most schools have them available for anyone to view). A lot of times the catalog has classes in it that aren’t offered anymore or offered only once every two years or something like that. The class schedule for the last couple of semesters will give you information about what’s offered every semester, what’s only offered once a year, and what’s offered every other year.
If you’re worried about research, professors at top LACs (by which I mean the top 100ish) are still research-active and one of their primary job responsibilities is guiding students in research.