Development of Intertextual-Based Learning Videos on The Concept of The Influence of Changes in Concentration on Shifts in Equilibrium

This research aims to produce an intertextual-based learning video on the concept of the effect of concentration on shifting equilibrium. This research uses the development research method (R&D) with the ADDIE development model (Analysis, Design, Development, Implementation, and Evaluation). The resulting product is an animated video in the form of mp4 which contains the concept of the effect of concentration on shifting equilibrium. Based on the assessment of product quality by content experts obtained a percentage of 85.71% with a very good category (VG); from the assessment of pedagogy experts obtained a percentage of 90.27% with a very good category (VG); from the assessment of media experts obtained a percentage of 95.60% with a very good category (VG); and according to the assessment of high school chemistry teachers obtained a percentage of 97.40% with a very good category (VG). This product received a positive response from students with a percentage of 90%. Based on the assessment results, this learning video can be used as an alternative media for the chemistry learning process in class.