Diagram of Reaction Energy Catalyzed and Uncatalyzed. Horizontal axis reads Reaction Process. Vertical axis reads Chemical Energy. Within the diagram are two lines; one labeled reaction with catalyst and the other labeled reaction without catalyst. Both lines begin at the same point on the diagram and move horizontally. The reaction without catalyst line curves upward to depict the movement of the energy barrier. The reaction with catalyst line curves slightly upward to depict the energy barrier's movement. Both lines fall down again at the end, below their starting point to the end products.