Iron oxide, aluminum, and a catalyst ... in an exothermic reaction. The demonstration shown in this video is very dangerous. Do not attempt to perform this demonstration. The combustion of methane is ...

which helps the reaction proceed more smoothly. This matched their density functional theory (DFT) predictions and was clearly shown in free energy diagrams and 2D volcano plots that link binding ...

The reaction shown by the second diagram is more exothermic. There is a greater difference in energy between the reactants and products. The green arrow is longer.

Catalysts are useful because they do not get used up during a reaction. Exothermic and endothermic reactions Exothermic reactions release energy into the surroundings, so they usually feel hot.