These exothermic and endothermic reactions can be really useful in certain situations. There’s an exothermic reaction in hand warmers - start the reaction and crystals will form to create a nice ...

Two dry solids --- barium hydroxide and ammonium nitrate --- are mixed to produce an endothermic reaction. The temperature of the mixture drops approximately 45oC and is cold enough to freeze the ...

In this reaction, the temperature goes down, so it is endothermic. In an endothermic reaction, more energy goes into breaking the bonds of the reactants than is released when the bonds in the products ...