This summarizes the new science in the discipline of chemistry and in the area of polymers presented at ICPA-12 in Munich since ICPA-11 three years ago in Kansas City. At ICPA-12, about half the 265 papers were on chemistry and polymer subjects. The new chemistry and polymers presented at ICPA-12 are: understanding of chemical dynamics of positronium, wide applications of positronium as a useful probe to polymers, understanding of polymer surfaces, and improved understanding of complex chemical systems using positronium and positron probes.