"Fire is produced by the combustion of matter, and its energy is released in the form of light and heat. In order to make a fire, there must be combustibles, ignition points, and oxidants. If any one of the three is missing, fire cannot be made. Fire is the medium. A plasma state other than a gaseous, solid, or liquid state.

Fire is composed of matter in the plasma (plasma) state, which is the fourth type of matter identified by British physicist Sir William Crookes in 1879. State (the other three are solid, liquid, and gaseous) ”

Extended information

The visible part of fire is called flame. When the particles vibrate, they can take on different shapes. When the temperature When it is high enough, plasma (a fourth state, similar to a gas) can appear. Depending on what is burning and the purity of the flame, the color and brightness of the flame will vary.

Fire is one of the most important factors affecting global ecosystems, and its positive role can maintain and promote the growth of various ecosystems. Humans use fire for cooking, heating, signaling, lighting, and propulsion.

Baidu Encyclopedia - Chemical Fire

Baidu Encyclopedia - Fire