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Its a chemical reaction with the bacteria.
Fundamentally, because the Gibbs free energy of elemental hydrogen and oxygen is substantially greater than the Gibbs free energy of the water formed by their chemical reaction, and the activation energy for the reaction is not excessively high.
It is newly formed in the sense that it was just released in its elemental form when it was previously trapped in a compound. The hydrogen atoms themselves, though, are not newly formed but are as old as the universe.
The chemical reaction alcohol and peroxide. also the chemical reaction for hydrogen and oxygen
H2O2 is not a chemical reaction, it is Hydrogen Peroxide.
Not a chemical reaction but the formation of hydrogen bromide (or hydrobromic acid, HBr) water solution.
NO
reduction
The lithium is oxidized an the bromine is reduced. In a chemical reaction involving a metal in elemental form, the metal will be oxidized.
Hydrogen chloride (HCl) is a chemical compound, an acid, not a reaction.
When a hydrogen atom acts like a nonmetal in a chemical reaction, it gains an electron.
hydrogen and oxygen