This study examines the characteristics of the content of scientific concepts stored in memory by beginning university science students. The features of this representation are examined and compared to the memory content of abstract non-scientific concepts shown by previous studies. Property generation task, a tool extensively used in identifying conceptual content, was used for this purpose. The findings show that the content of scientific concepts stored in memory by beginning university students is characterised by a predominance of entity properties along with, to a lesser extent, situation and introspective properties. This stands in contrast to previous findings about non-scientific abstract concepts, where situation properties are predominant. The implications of this finding on the acquisition and use of scientific concepts are discussed.