Commercial heat packs (containing iron and water, or supersaturated sodium acetate) and cold packs (various ammonium salts) can be used to show exo- and endothermicity. Heat packs that contain iron ...

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 ...

A reusable hot pack made of a supersaturated sodium acetate solution ... However, the hydrogen balloon reaction is more dangerous, because of the difference in reaction rates. The hydrogen reaction is ...

Exothermic and endothermic reactions Exothermic reactions release energy into the surroundings, so they usually feel hot. Endothermic reactions are the opposite. Writing word equations Chemical ...

While you're watching, look out for the different household items which can be used for exothermic and endothermic reactions. A Bunsen burner flame is produced by burning methane gas. The ...