3 Answers

  1. Well, first of all, oxygen doesn't burn individually. It supports the combustion of other substances, but it burns only in an atmosphere of fluorine, which is a stronger oxidizer than oxygen.�

    Second, water is not made up of oxygen and hydrogen atoms, but of water molecules. Combustion is a rapid oxidation reaction. A mixture of hydrogen and oxygen in the same proportion as in water is called rattlesnake gas, and it is so called because it burns very quickly (with a pop). More precisely, in this mixture, hydrogen is burned, and oxygen serves as an oxidizer, as it should. As a result of this combustion, H2O molecules are obtained. Thus, water does not burn precisely because it is already a product of hydrogen combustion.

  2. first, oxygen doesn't burn. Secondly, water is not a mixture of hydrogen and oxygen, but a chemical compound. by the way, in fluorine, water quite burns with the formation of hydrogen and oxygen fluorides.

  3. You compare the truth of a statement for the whole and its parts. This is a logical “part-whole” error. Hydrogen atoms in water molecules are not free, but are bound to oxygen atoms.

    Water does not burn, because it is the product of combustion.

    Combustion is the transformation of raw materials into combustion products, which intensively emits heat.

    In the case of water, combustion is a very fast combination of hydrogen and oxygen. This is also called oxidation. Therefore, water is a product of the combustion of hydrogen: hydrogen oxide, “oxidized” hydrogen.

    In general, water burns under special conditions. To do this, it needs contact with an oxidizer stronger than oxygen. For example, with fluoride. Both hydrogen and oxygen react with it.

    But in normal Earth conditions, by the time water is formed, it has already given up the heat of combustion of hydrogen and can no longer burn.

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