A small piece of sodium metal is placed in water. The sodium reacts with the water and gets very hot, producing sodium hydroxide and hydrogen gas. The demonstration shown in this video is very ...

Sodium would react very quickly with water to produce hydrogen gas in an exothermic reaction (a reaction that transfers energy to the surroundings). This would happen whenever the cutlery was put ...

A small piece of sodium metal is placed in a flask of chlorine gas. A little water helps expose the sodium so it can react with the chlorine gas. The reaction releases a lot of heat as the ionic ...

He also gave the reaction a jump-start with a small amount of sodium metal, which can be produced by the lower-yielding but far more spectacular thermochemical dioxane method; lithium harvested ...

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 ...