What do you think is fire a matter? If yes which state of matter is it? Is it a solid or a liquid or a gas? You might be confused. In today's session, we will know the answers to these questions. So, without any delay, let's get started...
What is Fire?
To know whether the fire is a matter or not, we need to know first, what fire is? Well, fire is a product of a chemical reaction between oxygen and any sort of fuel. This ignition sets a series of chemical reaction that eventually produces heat and light. And this is fire.
Is Fire Matter?
Fire is obviously not a solid nor it is liquid. So, is it more like gas? On a scientific level, fire differs from gas because gases can exist in the same state indefinitely while fire always burns out. One misconception is that fire is plasma, the fourth state of matter in which atoms are stripped of their electrons. Like fire and unlike other states of matter, plasmas don't exist in a stable state on Earth. They only form when gas is exposed to an electric field or superheated to temperatures of thousands of degrees. In contrast, fuels like wood and paper burn at a few hundred degrees - far below the plasma.
So, if the fire isn't a solid, liquid, gas, or plasma, what does this mean? It turns out that fire isn't actually a matter at all. Instead, it is our sensory experience of a chemical reaction of burning, which is called 'combustion'.
How does Fire form?
In a campfire, when logs are heated to their ignition temperature, the wall of their cell decomposes, releasing sugars and other molecules into the air. These molecules then react with airborne oxygen to create carbon dioxide and water. At the same time, any trapped water in the logs vaporizes, extends, and ruptures the wood around it, and escapes with a crackling sound. As the fire heats up, the carbon dioxide and water vapor created by combustion expand. Now, as they are less dense, they rise in a thinning column. Gravity causes this expansion and rising, which gives flames their characteristic taper.
Without Gravity, molecules don't separate by density, and the flames have a totally different shape. As I had already told you, we can see all of these because combustion also generates light. Molecules emit light when heated, and the color of the light depends on the temperature of the molecules. The hottest flames are white or blue.
Conclusion
Fire is not a matter, Therefore, it is not a solid, liquid, or gas. The fire itself is a process, the process of burning called combustion.
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Chemistry
Nice post
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