Admission officers may be able to tell you about research opportunities that are available on a campus you are considering. Also, your campus may have an office of undergraduate research. If so, that may be the best place to look once you have matriculated as a student.
Yes, nearly every liberal arts college will offer some majors in science disciplines and many offer interdisciplinary programs like biochemistry, neuroscience and/or environmental studies. Along with the science, you get a well-rounded exposure to other disciplines.
When looking for science-related clubs and activities at a college or university, you will find faculty members and academic departments sponsor most of the clubs.