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Elephant's toothpaste. Elephant toothpaste reaction. Elephant's toothpaste is a foamy substance caused by the rapid decomposition of hydrogen peroxide ( H2O2) using potassium iodide (KI) or yeast and warm water as a catalyst. [ 1] How rapidly the reaction proceeds will depend on the concentration of hydrogen peroxide. [ 2][ 3][ 4]
Nitroglycerin is an oily liquid that may explode when subjected to heat, shock, or flame. Alfred Nobel developed the use of nitroglycerin as a blasting explosive by mixing nitroglycerin with inert absorbents, particularly " Kieselgur ", or diatomaceous earth. He named this explosive dynamite and patented it in 1867. [ 31]
Saponification value or saponification number ( SV or SN) represents the number of milligrams of potassium hydroxide (KOH) or sodium hydroxide (NaOH) required to saponify one gram of fat under the conditions specified. [ 1][ 2][ 3] It is a measure of the average molecular weight (or chain length) of all the fatty acids present in the sample in ...
The first tracks observed in John Wood 's 1.5-inch (3.8 cm) liquid hydrogen bubble chamber, in 1954. A bubble chamber is a vessel filled with a superheated transparent liquid (most often liquid hydrogen) used to detect electrically charged particles moving through it. It was invented in 1952 by Donald A. Glaser, [ 1] for which he was awarded ...
Saponification is a process of cleaving esters into carboxylate salts and alcohols by the action of aqueous alkali. Typically aqueous sodium hydroxide solutions are used. [1] [2] It is an important type of alkaline hydrolysis. When the carboxylate is long chain, its salt is called a soap. The saponification of ethyl acetate gives sodium acetate ...
Girl blowing bubbles. Many bubbles make foam. A soap bubble (commonly referred to as simply a bubble) is an extremely thin film of soap or detergent and water enclosing air that forms a hollow sphere with an iridescent surface. Soap bubbles usually last for only a few seconds before bursting, either on their own or on contact with another object.
First, stop using so much soap. In actuality, more soap does not make. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...
Soap made from human corpses. During the 20th century there were various alleged instances of soap being made from human body fat. During World War I the British press claimed that the Germans operated a corpse factory in which they made glycerine and soap from the bodies of their own soldiers. Both during and after World War II, widely ...
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