What is the concept of burning and what does burning mean

Burning is generally involving oxygen, depending on the conditions. There are some problems, such as magnesium burning in the air, not only oxygen is involved in the reaction, but also carbon dioxide is involved in the reaction.

This is how we make the residue of ignition, and the ash basically means the same thing, and the method is the same.

Instruments and utensils: high-temperature resistance furnaces, electric furnaces, dryers, porcelain crucibles.

Try. Agent: sulfuric acid. How it works:

Crucible constant weight: put the porcelain crucible in the high-temperature resistance furnace, open the high-temperature resistance furnace to set the temperature to 700-800, until the set temperature is reached and stabilized, keep warm and burn for 1 hour, take it out and put it in the dryer to cool to room temperature, and weigh it accurately. Repeat the above operation and continue to burn for half an hour, cool to room temperature, and weigh accurately.

The two weighing deviations are less than and constant weight, and the porcelain crucible is put into the dryer for later use.

Operation method: take an appropriate amount of this product, place it in a porcelain crucible that has been burned to constant weight, weigh it accurately, slowly heat it on the electric furnace until the sample is completely carbonized, cool it to room temperature, add sulfuric acid to moisten the sample, heat it on the electric furnace until the sulfuric acid steam is exhausted, and then place it in a high-temperature resistance furnace of 700-800 to burn to constant weight, accurately weigh and calculate the results.

Calculation formula: % of the ignition residue of the sample = (m1-m2) 100 (m1-m0)m0 - porcelain crucible mass (g).

m1 – porcelain crucible and sample mass before firing (g).

m2 - the mass of the porcelain crucible and the sample residue after burning (g).

Burning is a noun in high school chemistry; It means heating solid matter to high temperature to achieve dehydration, decomposition or removal of volatile impurities, burning off organic matter, etc.; The aim is to remove organic matter and ammonium salts from the sample.

Burning is also a chemical reaction condition, and when writing the equation, the condition is directly written as "burning"; In chemical experiments, burning usually removes organic matter and ammonium salts from the sample. The main method is to place the solution to be evaporated in a crucible and heat it on a gas lamp lined with asbestos tiles.

Difference Between Roasting, Calcination, and Searing.

1. The purpose of the vibrillation bridge is different: calcination; It eases the internal tension of the molecular structure of the substance, and makes the substance stronger. Roasting; Components prepared for the charge.

burning; Solids are heated to high temperatures to achieve dehydration, decomposition or removal of volatile impurities, burning of organic compounds, etc.

2. The equipment used is different: selling pure calcination; Generally, it is a rotary kiln, etc. Roasting; Generally, it is a fixed bed, a moving bed, a reverberatory furnace, a boiling furnace, a roasting furnace, etc. burning; Generally, it is a gas lamp, and in the laboratory, an electric stove, an electric heating jacket, a tube stove and a muffle are generally used.

3. The required temperature is different: calcination; The temperature in industry is generally greater than 1200 °C. Roasting; Generally between 500 and 1000. burning; The temperature in the experiment was about 1000.

4. The applicable situation is different: calcination; Such as hammering, twisting, and bending. Roasting; It is mainly based on solid-gas reaction, and sometimes has both solid-solid, solid-liquid and gas-liquid interaction or interaction. burning; It is commonly used in experiments to remove organic matter and ammonium salts from the sample.

[Finger **] due to come.

Sunlight and other reasons cause redness or inflammation and pain from ** or other tissues.

Pronunciation: zhi[ shāo zhuó gǎn ] Citation: Fan dao Hisense "Yang Sheng": Ingestion of herbaceous agents can cause burning sensation in the tongue, mouth and pharynx, esophagitis and gastritis, vomiting and abdominal pain.

Kanji strokes: synonyms: burning sensation, burning sensation.

1. Burning sensation.

Pronunciation: [ zhuó rè gǎn].

Interpretation: A state word, as hot as a fire burning, scalding.

Citation: Zou Taofen, "A Letter from the Public Life Society to All Students in Beiping": "Every burning heart is now bursting with anger for the salvation of the emperor. ”

2. Burning sensation.

Pronunciation: [ zhuó shāo gǎn ].

Definition: The feeling of burning.

Citation: Fan Hixin, "Maintenance": In laboratories prone to burning, at least one emergency sprinkler and eyewash should be installed.

shāo zhuó gǎn

Interpretation] redness or inflammation pain of ** or other tissues caused by sun exposure and other reasons [example sentence].

There is currently no cure for herpes, and over-the-counter emulsions or colloids can relieve the burning and pain.

Burning refers to the operation of heating solid matter to a high temperature to achieve dehydration, decomposition or removal of volatile impurities, burning away organic matter, etc., which is called burning.

Definition: The operation of heating the first rot substance of a solid to a high temperature to achieve dehydration, decomposition or removal of volatile impurities, and burning away organic matter is called burning. In chemical experiments, burning usually removes organic matter and ammonium salts from the sample.

The main method is to place the solution to be evaporated in a crucible and heat it on a gas lamp with a wide asbestos tile pad.

The method of burning is to place the solid in a crucible and heat it directly with a gas lamp or electric stove, or in a high-temperature electric furnace to heat it at the required temperature.

For example, gravimetric analysis removes the reaction of calcining barium sulphate crystals and decomposing ore (calcined limestone is calcium oxide and carbon dioxide). Kaolin melt and dehydration make its structure loose and porous, and further processed to produce alumina; Roasting titanium dioxide to change its crystal form and properties are examples of burning solids at high temperatures.

Electric heaters commonly used in laboratories include electric furnaces and electric heating.

sleeves, tube furnaces and muffles, etc. The heating temperature can be controlled by adjusting the external resistance. The temperature of the tube furnace and the muffle furnace reaches about 1000 C, and the thermoelectric bucket is inserted into the furnace hole to indicate and control the temperature in the furnace.

Here are some common burning purposes:

1. Prevention and treatment of diseases: Burning can burn plant residues and harmful substances in the soil that are infected with microorganisms such as plant viruses, bacteria and fungi.

2. Reduce production pressure: In the process of agricultural production, burning can reduce labor costs and improve production efficiency.

3. Improve the ecological environment of Qili: Proper burning can remove weeds and dead leaves and other harmful substances, and promote the restoration and healthy and stable development of the ecosystem.

There are many kinds of purposes for burning, and different scenarios and targets require different methods and methods of burning.

Burning generally refers to the burning or scalding of an object by high temperatures, also known as scorching, burning, etc. Burning usually causes uncomfortable symptoms such as detachment, muscle and nerve damage, pain and edema, and in severe cases, it may also cause infection, shock and even death.

The occurrence of cautery is often accompanied by accidents, such as home cooking, fire blasting, industrial production, etc. In order to avoid the occurrence of burning, we should pay attention to the following:

First of all, in the process of home cooking, we should follow the principles of safe use of kitchen utensils, such as extinguishing the stove fire, closing the air valve, and turning on the steam cooker slowly, etc., to avoid causing harm to ourselves and others.

Secondly, fire is a common cause of burn in imitations. Therefore, we need to raise awareness of fire prevention and regularly check the home electrical and dangerous goods storage locations to avoid fires as much as possible.

Finally, in the industrial environment, we must strictly abide by the operating procedures, enhance safety awareness, strengthen equipment maintenance and operation training, and avoid the occurrence of burning accidents as much as possible.

In conclusion, cauterization is a common and serious injury that must be taken seriously. In daily life, we should raise safety awareness, stay vigilant, avoid burning accidents as much as possible, and ensure physical health and personal safety.

Explanation of cauterize [cauterize; burn;In the sixteenth century, all wounds were burned with a soldering iron or burned with boiling oil. - Amputation and Blood Transfusion" Detailed explanation of the high temperature and scorching. "The Book of Jin: Five Elements Chronicles":

The people slandered and practiced worm ......And the clouds, when they are outside, burn the iron to burn it. So he was burned, seventeen or eighteen. "Fa Yuan Zhu Lin" Volume 91:

The whole place was full of hot ashes, and the priests did not know what to do, and they burned their feet, and they were often in pain. Tang Kuyu Bai Juyi's poem "Passing Zhaojun Village": "So far, the female face of the village Yanxiao section has been burned into scars.

Zhou Erfu "Dr. Bethune" II: "In the sixteenth century, all wounds were cauterized with a soldering iron or injected with boiling oil**. The word decomposition of the explanation of burn burn (burn) āmakes something set on fire:

Incineration. Burn. Cauterize.

Burnt. Heat up an object with fire or something hot: boiling water.

Cooking. Brick. Welding.

Burnt blue. Burning. One way to cook:

Roasted eggplant. Chicken. Increased body temperature:

Run a fever. Fever. Baking cakes:

Burning cake Explanation of burnt burn ó burn, burn: burn. Burns (burns).

Anxious. I'm in a hurry. Understood, thorough:

Insight. Distinct: Searing.

Searing. Searing. Radical : Fire.