Something that burns without oxygen 30

Combustion, commonly known as ignition, refers to the exothermic reaction between combustibles and oxidants, usually accompanied by flames, luminescence and smoke. Combustion has three characteristics, namely chemical reaction, exothermic and luminescence. For the occurrence and development of the process of material combustion, the following three necessary conditions must be met, namely:

combustibles], oxidizers, and temperature (ignition source). Combustion can only occur if these three conditions are met at the same time, and combustion cannot occur in the absence of any of these conditions. However, it is not necessary for combustion to occur if the above three conditions exist at the same time, and these three factors must interact with each other for combustion to occur.

Combustibles] Any substance that can react with oxygen or other oxidants in the air is called combustible. Combustibles are divided into three categories according to their physical state: gaseous combustibles, liquid combustibles and solid combustibles. Most of the combustible substances are compounds containing carbon and hydrogen, some metals such as magnesium, aluminum, calcium, etc. can also be burned under certain conditions, and many substances such as hydrazine, ozone, etc., can release light and heat through their own decomposition at high temperatures.

Oxidizer or oxygen].

Substances that help and support the combustion of combustibles, that is, substances that can oxidize with combustibles are called oxidants. The oxidant in the combustion process is mainly free oxygen in the air, and other oxidants such as fluorine and chlorine can also be used as oxidants for combustion reactions.

Temperature] refers to the temperature at which the combustion reaches the ignition point.

For example: H2, Fe, Cu, Na, etc. can all be burned in Cl2.

Hydrogen can be burned in chlorine, H2+Cl2==2HCl

Magnesium can be burned in carbon dioxide.

No, because oxygen promotes combustion, and if you can burn without oxygen, white phosphorus can burn in hot water.

Burn with magnesium in nitrogen.

Oxygen cannot be burned.

Oxygen is not flammable and cannot be burned. Although oxygen supports combustion, it is not combustible and therefore cannot be burned. However, oxygen has "combustion" and can support the combustion of flammable substances.

The so-called combustion refers to a kind of luminous oxidation reaction produced by the interaction between combustibles and combustibles, that is, oxidants, which is called combustion.

Oxygen, chemical formula: O2, at room temperature, is a colorless and odorless gas. -182, it turns into a light blue liquid.

, it will turn into a light blue snowflake-like solid. Under standard conditions (0, the density of oxygen at atmospheric pressure is about, which is slightly heavier than air. o Slightly soluble in water.

The amount of oxygen in the air is second only to nitrogen. It accounts for about 21% of the total volume of air. Oxygen is an essential substance for maintaining life, and oxygen is needed to maintain the respiration of animals and plants. The phototolicity of plants releases oxygen.

Oxygen is chemically very reactive and reacts with almost most substances. The "flammability" of oxygen refers to the fact that a flammable substance can react with oxygen to emit flame or light.

2CO+O2=Ignite=2CO2 (light blue flame).

S+O2=Ignite=SO2 (Light Blue Flame).

2P+5O2=Ignite=2Po5 (yellow-white Zhongming flame).

C + O2 (pure oxygen) = ignition = CO2 (white light).

Uses of Oxygen:

The most important use of oxygen is to supply breathing and support combustion, which is very widely used and is often used in electric welding and welding in life; It is often used in oxidation reactions in industry; It is used in medicine to rescue critically ill patients.

Oxygen cannot be burned.

Oxygen is a kind of element formed by oxygen, which is chemically active and can react with oxygen with most elements. It is not very active at room temperature, and it is not easy to interact with many substances. However, it is very active at high temperatures and can be directly combined with a variety of elements, which is related to the electronegativity of oxygen atoms second only to fluorine.

Oxygen pin gas itself cannot be burned because oxygen is not flammable. Oxygen is combustible because oxygen is an accelerant that can rekindle the sparkled wooden strips, and other substances can burn in oxygen. Oxygen is a colorless and odorless gas and is the most common elemental form of oxygen.

Melting point , boiling point 183 . Not easily soluble in water, about 30ml of oxygen is dissolved in 1L of water. In the air, oxygen accounts for about 21%.

Liquid oxygen is sky blue, and solid oxygen is blue crystals.

Chemical properties of oxygen

Oxygen is chemically more reactive. With the exception of rare gases and less reactive metal elements such as gold, platinum, and silver, most of the elements can react with oxygen, and these reactions are called oxidation reactions, and the compounds produced by the reactions (composed of two elements, one of which is oxygen) are called oxides.

In general, aqueous solutions of non-metallic oxides are acidic, while alkali metals or alkaline earth metal oxides are alkaline. In addition, almost all organic compounds can be violently burned in oxygen to produce carbon dioxide and water. In chemistry, the chemical reaction between the skin of the substance and oxygen has been defined as an oxidation reaction, and the redox antibranching should refer to the reaction in which electrons are transferred or shifted.

Oxygen is flammable, oxidizing.

The above content refers to Encyclopedia - Oxygen.

Because oxygen is just a combustible.

According to the query library, it is known that oxygen is only a kind of combustible. Combustion is a kind of intense chemical reaction of luminescence and heat, and in general, combustion refers to the phenomenon that occurs when flammable substances are in full contact with combustibles and reach the ignition point, at this time they are reflected and characterized as luminous heat, so oxygen cannot be burned. In addition, combustion does not necessarily require the participation of oxygen, such as the reaction of magnesium metal and carbon dioxide to form magnesium oxide and carbon, the reaction does not involve oxygen, but it is a violent chemical reaction that emits light and heat, which also belongs to the category of combustion.

Oxygen is a single trapped substance formed by oxygen elements, the chemical formula O2, its chemical properties are relatively active, and most elements can react with oxygen. It is not very active at room temperature, and it is not easy to interact with many substances. However, it is very active at high temperatures and can directly combine with a variety of elements, which is related to the fact that the ruler of oxygen atoms is second only to fluorine.