It is a part of Group 4 (Experimental Science) subject in the IBDP curriculum. It is the study related to investigation of properties and relationship of matter and its changes. It is taught at both HL and SL level and comprises of three papers. Paper-1 has multiple choice questions (40 for HL in 1hour and 30 for SL in 45 minutes) and has 20% weightage. The structure based questions are assessed in Paper-2 whereas Paper-3 is on database questions and study of one of the options from the prescribed optional topic of IB. A apart from these 3 written papers which are externally marked for 80%, each student also need to conduct an Individual Investigation (IA) for remaining 20% .