This study focused on exploring and evaluating students' views of the Nature of Science in the context of undergraduate chemistry laboratory. Thirty-six undergraduate students doing a laboratory course in upper division physical chemistry were assessed using an open-ended instrument and assessment criteria that categorise them in three levels of understanding. Results revealed that in general, the undergraduate students have transitional views of the nature of science, a level between naïve and informed views. The findings led to a substantiated argument for incorporating the nature of science in undergraduate science curricula.