Screencast showing how to use group-contribution methods for computer-aided molecular design – introduction to approach and highlighted pitfalls. Group-contribution method from: Joback, K. G., & Reid, R. C. (1987). Estimation of pure-component properties from group-contributions. Chemical Engineering Communications, 57(1-6), 233-243. Presented by Dr Daniel Belton, University Teaching Fellow, University of Huddersfield. A partially completed version of the spreadsheet used in this video can be downloaded at: https://drive.google.com/open?id=1GgK...