In chemistry what are the three colors of flame and why each

Theoretically, the "flame" produced by the oxidation of matter (combustion is violent oxidation) should be colorless, but why the general flame has a color, it is because the atoms that make up the matter get energy at high temperatures, and the energy level transition occurs, from the ground state to the excited state, the atoms in the excited state are unstable, and will automatically return to the ground state, and release energy when transitioning to the ground state, and this energy is released in the form of light. Since the energy emitted by different atomic transitions or the energy emitted by the same atom in different excited state transitions is not the same, the color of the light emitted by the combustion of various substances or the same substance under different circumstances is different (the color of light is determined by the frequency of light, and the frequency value of each light corresponds to an energy value), so it is not surprising that the same substance burns at different temperatures and emits different colors of light, and it is not difficult for people to explain the three layers of flame when they see ......

Personally, I feel that not all substances are burned by three layers of flames: for example, magnesium strips are burned with white light, and the stratification of the flame is not caused by the purity of the substance, which will affect the color of its combustion, such as sodium will produce yellow light.

Not all substances will produce flames when burned, such as wood charcoal, which will not produce flames under normal circumstances.

Satisfied, thank you.

The flame is divided into three layers: the outer flame, the inner flame, and the flame center. Its colors are:

1. The overall color of the flame depends on the type of fuel burned, and different fuels have different colors when burning.

2. Generally speaking, the outer flame is the full combustion of the fuel, and the shed refers to the brighter color of the flame; The flame center is an inadequate combustion of the fuel, and the flame will be darker in color.

3. Under normal circumstances, the corresponding colors of the outer flame, the inner flame and the flame center are: red, orange and blue.

The temperature of the three layers of the flame is different: the temperature of the outer flame is greater than that of the inner flame and that of the center of the flame. The flame core temperature is close to zero.

Substances that emit white light when burned are: charcoal in oxygen, paraffin in oxygen, and magnesium in air.

Combustion produces a faint blue flame of hydrogen in the air and sulfur in the air.

Combustion produces blue-purple flames: sulfur in pure oxygen.

Combustion produces a blue flame with a base of spring: carbon monoxide (CO), methane.

Combustion produces white smoke: phosphorus in the air or oxygen.

The forest blindness with white fog is: concentrated hydrochloric acid can form white fog in the air. Nitric acid is also prone to white haze.

Combustion of carbon dioxide and water produces organic matter such as CH4, paraffin, C2H5OH, CH3OH, etc.