I finished the book called chemical change and it is about how oxygen and other compounds make chemical reaction with different matters and how many scientists studied the reactions but some couldn’t succeed while creating and figuring out new things. Also after the failures of these scientists the failures created a path for future scientists to solve the life histories. Many mixtures or compounds combined, create another chemical reaction like metal and rust or sodium atoms and chlorine atoms which create table salt. That is my summary about the book “Chemical Change”.