Why can t water burn? Why can t water burn simply

Combustion, in general, refers to a process in which a substance and oxygen are violently combined. Alcohol, gasoline, kerosene, and water are all colorless and transparent liquids.

There are two main reasons why water cannot burn:

1. There is no carbon in the water. Carbon is one of the most important components in fuel, and water does not have carbon in it, so it cannot be used as a fuel.

2. The melting point and boiling point of water are relatively high, and it cannot be burned at room temperature. The combustion reaction requires a higher temperature to proceed, while water has a relatively high melting and boiling point, so it cannot be burned at room temperature.

It is important to note that water can be oxidized at high temperatures and pressures, but this is not considered combustion.

Basic information on the inorganic compound "water":

Water (chemical formula HO) is an inorganic substance composed of hydrogen and oxygen, which is non-toxic and drinkable. It is a colorless and odorless transparent liquid at room temperature and pressure, which is known as the source of human life and an important substance to maintain life, also known as hydrogen oxide.

Water is one of the most common substances on Earth, with about 71% of the Earth's surface covered by water. It is an important resource for the survival of all life, including inorganic compounds and humans, and is also the most important component of living organisms. Although it is present in small quantities in air, it is an important component of air.

Pure water is a very weak electrolyte with very weak electrical conductivity. Water in daily life has more anions and cations due to the dissolution of other electrolytes, so it has more obvious conductivity.

The above content reference: Encyclopedia - Water.

Water is the substance after the combustion of hydrogen. The scientific definition of combustion is the process by which a substance and oxygen undergo a chemical reaction. Some substances contain parasols that are very flammable, such as yellow phosphorus, which will burn violently when exposed to oxygen in the air. <

Because water is a substance after hydrogen is burned, it cannot be burned. The scientific definition of combustion is the process by which a substance and oxygen undergo a chemical reaction. Some substances are very flammable, such as yellow phosphorus, which burns violently when exposed to oxygen in the air.

Water Introduction: Water (chemical formula: HO) is an inorganic substance composed of two elements, hydrogen and oxygen, and is non-toxic. It is a colorless and odorless transparent liquid at room temperature and pressure, and is known as the source of human life.

Water, including natural water (rivers, lakes, atmospheric water, seawater, groundwater, etc.) containing impurities, distilled water, theoretically pure water, artificial water (water obtained by combining hydrogen and oxygen atoms through chemical reactions).

Water is one of the most common substances on the earth, an important resource for the survival of all life, including inorganic chemistry, and the most important component of living organisms. Water has played an important role in the evolution of life. It is a narrowly non-renewable, broadly defined renewable resource.

Pure water can conduct electricity, but it is very weak (conductivity is negligible in daily life) and is a very weak electrolyte. Water in daily life has more positive and negative ridge ions due to the dissolution of other electrolytes, and the conductivity is enhanced.

Here's why: for combustion to occur, three things must be "present" at the same time. The first is the combustibles themselves, such as paper, wood, clothing; followed by accelerants (oxygen is the most common accelerant); Finally, there is the ignition source (e.g. open flame, lightning strike, electric spark, etc.).

At the same time, in order to cause combustion, it is necessary not only to gather these three things, but also to bring them to a certain amount.

Water (H20) is made up of two hydrogen atoms and one oxygen atom. The fundamental reason why water cannot be burned is that it is not combustible. Hydrogen combustion refers to the combustion of hydrogen elements, while hydrogen atoms cannot be burned.

In the same way, oxygen as an elemental substance can support combustion, while oxygen atoms cannot support combustion.

Elemental matter is a pure substance composed of the same element, such as oxygen, which can be said to be an oxygen molecule composed of two oxygen atoms, or an oxygen elemental substance composed of oxygen elements.

The flammability of a substance refers to the violent redox reaction with oxygen, in which the reducibility of the combustible substance is reflected, and the hydrogen in the water has been destroyed and is no longer reducible, so it can no longer be burned as an energy source.

In middle school chemistry class, I learned that hydrogen becomes water when it is fueled by oxygen, which means that water is already a substance after hydrogen is burned, and in a sense it can no longer be burned. To give a simple example: when we burn a piece of paper, the paper burns and turns into ashes, and the ashes cannot be burned again.

Diffusion combustion

Combustible gas and air molecules diffuse and mix with each other, and their mixed concentration is outside the range of **, and it can ignite and burn when it encounters an ignition source.

Evaporative combustion. The evaporation of flammable liquids, such as gasoline, alcohol, etc., produces a vapor that is ignited**, which releases heat to further heat the surface of the liquid, thereby promoting the continuous evaporation of the liquid and allowing the combustion to continue. Although naphthalene and sulfur are solid at room temperature, they will sublimate to produce vapor after heating or vapor after melting, which is also evaporative combustion.

Decompose combustion. It refers to the first thermal decomposition of combustibles in the combustion process, and the reaction of decomposition products with oxygen produces combustion, such as the combustion of solid combustibles such as wood and coal.

Surface burning. Combustion takes place at the point where the air comes into contact with the solid surface. For example, when wood is burned, it will not decompose the combustible gas in the end, only solid charcoal remains, and the combustion is carried out in the contact part between the air and the solid charcoal surface, which can produce a red-hot surface without producing flames.