Is the combustible material needed for combustion necessarily oxygen, and are there any other gases

In addition to oxygen, of course, there are other gases that can participate in combustion!

And a lot. As long as the temperature rises, he will speed up the reaction, so it will reflect at room temperature, but the speed is too slow to detect it from the macroscopic level, so he is heated with fire to make it reflect quickly. In this way, he can be found on a macro scale.

Any redox reaction that is intense and glows is combustion.

Therefore, combustion does not necessarily involve oxygen, and the combustion of hydrogen in chlorine is combustion in the true sense.

Magnesium can also be burned in carbon dioxide.

The reaction condition is ignition. I don't know if you know the difference.

The flammable gas you are talking about is flammable in oxygen, not inherently flammable.

So, it is flammable in oxygen, and of course not necessarily in chlorine.

Well, the definition of combustion is to broaden the horizon.

Oxygen is very important to us, and it is used in many industrial applications. We also know that general combustion requires oxygen to participate, so can oxygen itself be burned? Let's follow me and have a look.

Oxygen itself is not combustible, it is only a combustible gas.

Oxygen cannot be burned, but oxygen supports combustion. In general, combustion refers to the violent oxidation reaction of combustibles and combustibles, and oxygen is only a combustible gas, not a combustible. Take a small example in life to understand that although there is oxygen, the fire is extinguished after the candle is burned, and it does not burn forever, so the oxygen itself cannot burn.

Oxygen is a combustible gas, combustible substances refer to substances that help combustibles burn, and substances such as oxidants are combustibles.

The minimum concentration of oxygen that humans can tolerate is one below which it has a great impact on the human body. Mild cases can reduce work efficiency, may cause some problems in the head, lungs and circulatory system, and in severe cases, it will lead to shortness of breath, loss of judgment, purple lips, loss of intelligence, fainting, unconsciousness, paleness, nausea and vomiting, and even convulsions within 40 seconds, respiratory arrest, and then death.

Scientists' studies have shown that excessive breathing of pure oxygen can cause poisoning in animals, and the same is true for humans. In a pure oxygen environment with a pressure greater than half an atmosphere, it may lead to pulmonary edema, pulmonary congestion and hemorrhage, affect respiratory function, and damage various organs; In a pure oxygen environment with a pressure of 1 atmosphere, pneumonia will occur, and eventually respiratory failure, suffocation, and generally only 24 hours can live; In a high-pressure pure oxygen environment with a pressure of 2 atmospheres, it can cause brain poisoning, mental confusion, etc., up to 1 to 2 hours; In a pure oxygen environment with a pressure of 3 atmospheres or even higher, a person will develop brain cell degeneration and necrosis, convulsions, coma, and eventually death within a few minutes.

Combustion refers to the process by which a substance reacts with oxygen to release heat energy. Combustion needs to meet the following three conditions:

1.Combustible Cave (Fuel): Combustion must have a combustible substance, also known as fuel.

Fuels can be solid, liquid, or gaseous, and they are capable of releasing energy through chemical reactions when in contact with oxygen. Common fuels include wood, coal, oil, and natural gas.

2.Combustible (oxidizing): Combustion requires oxygen as an oxidizing agent, also known as an oxidizing agent. When oxygen comes into contact with fuel, it participates in chemical reactions and provides conditions for oxidation. The oxygen content in the air is about 21%, which is an essential ingredient in the combustion process.

3.Ignition source (activation energy): Combustion requires an ignition source to start the combustion reaction, also known as activation energy.

The ignition source can be a flame, an open flame, an electric spark, etc., which provides enough energy to break the chemical bond between fuel and oxygen, thus initiating a combustion reaction. Once the ignition source initiates combustion, the reaction continues on its own.

The combustion reaction can only occur when the three conditions of combustible substance, oxygen and ignition source are met at the same time. These three conditions are known as the necessary conditions for combustion, and together they enable the combustion reaction to proceed and release energy and produce flames. During combustion, the fuel and oxygen undergo a chemical reaction to produce products such as carbon dioxide, water vapor, and heat energy.

The three conditions that must be met for combustion are: combustibles, auxiliary Linghong combustible materials and ignition sources. There are three basic conditions that must be met for combustion to occur:

1) There should be combustibles; Such as wood, natural gas, oil, etc.; (2) There should be combustible substances, such as oxygen, potassium chlorate and other oxidants; (3) There must be a certain temperature, that is, heat energy (ignition source) that can cause the combustion of combustible substancesCombustibles, oxidants, and ignition sources, known as the combustion triad, occur when these three elements are present at the same time and interact with each other.

Combustion is an exothermic and luminescent chemical reaction, the reaction is extremely complex, the chain reaction of free radicals is the essence of the combustion reaction, and light and heat are the physical phenomena that occur during combustion.

Oxygen is a combustible gas, and oxygen can cause flammable gases to combust, but it does not have to be oxygen (such as hydrogen and chlorine) for combustion

Combustible gas is a gas (e.g., oxygen) that cannot be burned on its own but can provide conditions for combustion to occur; Flammable gases are gases that can be burned by themselves (such as hydrogen, carbon monoxide, etc.), but the combustion of combustible gases only occurs under the premise of contributing to the existence of combustible gases.

Oxygen is not a flammable gas, but the warehouse where oxygen is stored is still a Class B fire hazard, because it will be more likely to cause disasters when oxygen is sufficient! Oxygen, fluorine, and liquid chlorine are all accelerants!

Oxygen is the most common accelerant and many substances can be burned in oxygen at high temperatures. The following is a reference to the combustible gas that is actually an oxidizing agent that removes oxygen.

Fluorine and chlorine can be used to support combustion, and magnesium can be burned in nitrogen.

Here fluorine gas is the strongest accelerant, which can react with almost anything, including gold and the noble gas XE: combustion is actually an oxidation reaction, but the essence of the oxidation reaction is not to react with oxygen, but to gain and lose electrons.

If there is a reaction with a change in valency, it is called a redox reaction, and in the reaction (if it is combustion), the element that reduces the valency is the oxidant and also the accelerant.

But oxygen oxidation is not the strongest, so oxygen can be oxidized by fluorine, and the oxidation product is OF2

Combustible gas refers to a gas (such as oxygen) that cannot be burned by itself, but can provide conditions for combustion.

Combustible gas refers to flammable gases that can be burned by themselves (such as hydrogen, carbon monoxide, etc.).

Oxygen, on the other hand, can make flammable gases combustible, but combustion is not oxygen, so oxygen is a combustible gas.

Wrong. Flammability is the property that can support combustion, and flammability is the property that can burn. Oxygen itself is not combustible, so it is not flammable. But oxygen can help combustion, so oxygen is combustible.

Flammability refers to the ability of a material or product to be flame burned under specified test conditions. It includes a number of characteristics related to whether it ignites easily and whether it can sustain combustion.

Oxygen (oxygen), chemical formula O2. Chemical formula: , colorless and odorless gas, 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.

Oxygen accounts for about 21% of the air. Liquid oxygen is sky blue. Oxygenation is a blue crystal. 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.

Flammable gases.

Oxygen is not a flammable gas, it is an accelerant, and there are many flammable gases.

Such as: hydrogen (H2), carbon monoxide (CO), methane (CH4), ethane (C2H6), propane (C3H8), butane (C4H10), ethylene (C2H4), propylene (C3H6), butene (C4H8), acetylene (C2H2), propyne (C3H4), butyne (C4H6), hydrogen sulfide (H2S), phosphine (PH3), etc.

Flammable gases must be tested before they are ignited.

Physical properties of oxygen.

Colorless and odorless gas, melting point, boiling point, relative density, water = 1), relative vapor density air = 1), saturation vapor pressure, critical temperature, critical pressure, octanol Water partition coefficient:. Atmospheric volume fraction: about 21%).

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 form carbon dioxide and water. In chemistry, the chemical reaction between a substance and oxygen was defined as an oxidation reaction, and a redox reaction refers to a reaction in which electrons are transferred or shifted.

Oxygen is flammable, oxidizing.