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Jul 18, 2024 · Fire is mostly a state of matter called plasma. However, parts of a flame consist of solids and gases. The exact chemical composition of fire depends on the nature of the fuel and its oxidizer. Most flames consist of carbon dioxide, water vapor, nitrogen, and oxgen.
- Anne Marie Helmenstine, Ph.D.
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Jan 26, 2017 · Class D fires: comprise of combustible metal fires, involving metals such as potassium, sodium, aluminum and magnesium. Class K fires: involve cooking oils and greases, such as animal and...
- Sarah Calams
Fire is one of the four classical elements and has been used by humans in rituals, in agriculture for clearing land, for cooking, generating heat and light, for signaling, propulsion purposes, smelting, forging, incineration of waste, cremation, and as a weapon or mode of destruction.
Have you ever wondered what fire is actually made of? I'll dive into the science behind fire and explain the components that make up a flame.
- 2 min
- 210
- A Pinch Of Salt
Aug 29, 2024 · Fire, rapid burning of combustible material with the evolution of heat and usually accompanied by flame. It is one of the human race’s essential tools, control of which helped start it on the path toward civilization. The original source of fire undoubtedly was lightning, and such fortuitously.
- The Editors of Encyclopaedia Britannica
- Fire is a rapid burning of combustible material in the presence of oxygen manifested as flames. It is usually accompanied by heat and light. Fire i...
- Evidence suggests that the earliest controlled use of fire by hominins was about 1,420,000 years ago. However, it was not until about 7000 BCE that...
- Early humans used fire to keep warm and cook their food. They also learned to use it in hunting and warfare, to kill insects, and to clear forests...
- The most widespread method of producing fire among prehistoric peoples was the friction method. Most commonly, a pointed hardwood was twirled betwe...
- Fire has been an essential element at every stage of the growth of civilization. Much of the history of technology and science might be characteriz...
Typically, fire comes from a chemical reaction between oxygen in the atmosphere and some sort of fuel (wood or gasoline, for example). Of course, wood and gasoline don't spontaneously catch on fire just because they're surrounded by oxygen.
Fuels can be solids, liquids or gases. During the chemical reaction that produces fire, fuel is heated to such an extent that (if not already a gas) it releases gases from its surface. Only gases can react in combustion. Gases are made up of molecules (groups of atoms).
