Iron oxide, aluminum, and a catalyst are placed in a flowerpot ... In this reaction, the temperature goes down, so it is endothermic. In an endothermic reaction, more energy goes into breaking the ...

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.

Science presenter Jon Chase demonstrates an exothermic and an endothermic reaction, and explains how temperature changes can be used to identify which reaction is which. The exothermic reaction is ...