What color is the hottest fire?
The tip of the bluish zone is the hottest part of the lighter flame at around 1300C. The yellow-orange-colored zone in the upper part of the flame is, however, much cooler at around 800C.
What do the individual colors of a flame mean?
The flame temperature stimulates chemical reactions, molecules and small particles that are created during the combustion process. These then produce different colors. Essentially, the thermal energy of the combustion process is converted into visible light through the excitation of molecules and small particles.
What burns with a blue flame?
Rubidium and its salts color the flame red (780 and 421 nm). Cesium and its salts color the flame blue-violet (458 nm).
Why is the fire blue
As the temperature increases towards the flame, the long hydrocarbon chains in the paraffin (CnH2n + 2) break open and some of them combine to form new molecules. The strongest emission of the CH molecule is at a wavelength of 432 nanometers, which corresponds to a blue color.
Why is the fire glowing?
Fire is a chemical combustion process. Heat triggers a reaction between oxygen and fuel. This electromagnetic radiation is what makes the fire bright – or a small part of it.
Why is the fire hot?
Fire is hot because converting the weak single bond in the oxygen molecule, O2, into the stronger bonds in the combustion products (carbon dioxide and water) releases energy (418 kJ per 32 g O2); the binding energies in the fuel only play a subordinate role.
What are the properties of fire?
Fire is light-hearted, cheerful and lively, so the fire illuminates and warms its surroundings. Meaning and properties – The fire energy stands for warmth, passion, joy and hate, design, dynamism, action – intellect, learning and acting.
What happens in a fire?
You need three things for a fire: fuel, heat and oxygen. In the heat, the fuel reacts with the oxygen in the air, causing oxidation. This means that the molecules of the fuel combine with the oxygen and heat is released in the process.
What is fire explained to children?
Something burns in a fire. What burns combines with oxygen, a gas from the air. You can see a flame. The fire makes it warm and one sees the fire as light.
What is the fire
In the most general sense, fire is the term used to describe oxidation processes in which flames are formed. “Oxidation” is a chemical reaction in which a so-called “oxidizer” (such as oxygen) accepts electrons from another element (the fuel).
What kind of substance is fire?
A flame is a manifestation of energy in the form of light and heat that is created by a reaction of a combustible gas with oxygen. So flames are burning gases. A fire is a chemical reaction that creates energy and new substances.
What is fire chemically?
Combustion is a redox reaction that takes place with the release of energy in the form of heat and light, i.e. exothermic. In common parlance, the term is understood to mean the oxidation of a material with oxygen with the formation of flames (fire).
What gases are produced in a fire?
The most common are: carbon dioxide (CO2) carbon monoxide (CO) soot
What types of fire are there?
We introduce you to four types of fire that are almost always needed in survival … Pyramid fire as an all-round campfire (fire makes survival) Tinder, small branches, bark and other easily combustible material as a fire heart in the middle. Therefore, pyramid-shaped, medium-sized branches. therefore again large branches in the shape of a pyramid.
What happens in a chemical incineration?
When burned, a substance reacts chemically with oxygen or (rarely) another gas. The substance can be solid (e.g. wood, coal), liquid (gasoline, alcohol), becoming liquid (wax) or gaseous (methane gas, natural gas). Often light is released when burned.
What is the result of combustion?
If enough oxygen is added to the gas before combustion, as is the case with camping stoves, for example, a blue flame is created. The only products of combustion are water and carbon dioxide.
What is a complete combustion?
“Combustion” is the rapid chemical combination of a substance with oxygen, releasing heat and light. One speaks of complete combustion when all oxidizable components of the fuel have bound the highest possible amount of oxygen.
What happens when metals are burned?
Metals react with oxygen during the process of oxidation. An example of such oxidation is the incineration of iron wool. After ignition, however, the iron wool continues to burn on its own, releasing a certain amount of energy (this is the heat that is created when burning).
What happens when you burn carbon?
1 atom of carbon and 1 molecule of oxygen react to form one molecule of carbon dioxide. With the symbols of chemistry the formula equation reads: C + O2 = CO2.
What happens when natural gas is burned?
When natural gas is burned, mainly non-toxic carbon dioxide (CO2) and water vapor are produced, with typically significantly lower levels of pollutants in the exhaust gas than other fuels. However, when burned in the absence of oxygen, the very toxic carbon monoxide (CO) can be produced.
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