The purpose of this study was to establish the effectiveness of computer simulation on students’ conceptual understanding of chemical bonding. The study utilized pre-test and post-test treatment to come up with results. The sample size for the study was 42 second year students purposively selected out of 286 General Arts students from the T. I. Ahmadiyya Senior High School, Potsin. Tests (pre-test and post-test) and questionnaire were the main research instruments. The data obtained from the tests were analysed using t-test statistics to establish students’ achievement levels after the intervention. The study revealed that there was a significant difference in the performance of students after the intervention. More than 80% of the students had sound understanding of the concept after the intervention. This implies that the intervention had positive effect on conceptual understanding of the chemical bonding. The findings would enable curriculum planners as well as policy makers to suggest a more student centered curriculum. It would also prompt school administrators to look into the development and acquisition of appropriate facilities to enhance the teaching of specific concepts in science.