Combustion is the process of burning. Join Yahoo Answers and get 100 points today. Fire actually does not breathe. When oxygen is taken away, the fire completely extinguishes. Maybe you multitask too much between screens, Social distancing for teens shouldn’t mean giving up your social life, Why today’s ‘fast fashions’ can be bad for the planet, Rogue planets wander the galaxy all alone, Star of science and movies, the Arecibo radio telescope is dead, Flexible devices may help clothes solar power your screens, New device tells smiles from frowns — even through a mask, Old clothes soon may be recycled, not trashed, Here’s how to make flip-flops biodegradable, Analyze This: Shipwrecks provide a home for bottom-dwelling fish, Surprising long-haul dust and tar are melting high glaciers, Jumping ‘snake worms’ are invading U.S. forests, Polluting microplastics harm both animals and ecosystems. You need three ingredients to make fire: fuel (like wood or gasoline), oxygen and heat. Forcing oxygen onto a fire based on gas risks blowing it out. so with use of oxygen ( very common and found in large amount in atmosphere ) oxidizing elements. A fire’s colorful flame results from a chemical reaction known as combustion. Any flame requires three ingredients: oxygen, fuel and heat. Not atoms. Stephen Ornes lives in Nashville, Tenn., and his family has two rabbits, six chickens and a cat. (On planets such as Venus and Mars, with atmospheres containing far less oxygen, fires would be hard to start.) Without sufficient oxygen, a fire cannot begin, and it cannot continue. Any number of sources may supply heat. It doesn’t, however, offer clues to why things burn. Oxygen’s role is … atom  The basic unit of a chemical element. As punishment, the gods chained the thief to a rock, where an eagle fed on his liver. fire  The burning of some fuel, creating a flame that releases light and heat. Ok, im going to be as simple as i can with this one. Same case happens in glucose etc.. also, Naturally all type of materials ( organic/inorganic) need oxygen for combustion. Without oxygen, the fuel will not be fed to the heat and the fire will not be able to continue to burn. Register to access: Already Registered? Forcing oxygen into a carbon-based fire will probably increase it temperature. Get your answers by asking now. Wood, for example, contains molecules made from bound atoms of carbon, hydrogen and oxygen (and smaller amounts of other elements). In other words, when something burns, there’s no un-burning it. Typically, fire comes from a chemical reaction between oxygen in the atmosphere and some sort of fuel (wood or gasoline, for example). With a decreased oxygen concentration, the combustion process slows. Why.....are you following?....Why does fire need to. All fires need oxygen. For the combustion reaction to happen, you have to heat the fuel to its ignition temperature. An oxygen molecule has two oxygen atoms in it. People feel heat as warmth on the skin. A flammable gas like Methane would make up the fuel, but would still need enough oxygen and enough heat in order to burn. Daily we need to open up to breathe in the divine oxygen of the Spirit. He has written for Science News for Students since 2008 on topics including lightning, feral pigs, big bubbles and space junk. thank you.....DONT SAY "CUZ IT NEEDS TO BE OXIDIZED" seriously....i might just, like, kill a small mammal or something...... Actually is the fuel required oxygen to complete the combustion reaction. Post was not sent - check your e-mail addresses! This is why a … It is an important part of coal, limestone and petroleum, and is capable of self-bonding, chemically, to form an enormous number of chemically, biologically and commercially important molecules. So the fire is the side product of the reaction with oxygen. Let’s begin at the beginning. So, the Sun can "burn" hydrogen to helium without the need for oxygen. Explore more by visiting the website of the Alan Alda Center for Communicating Science at Stony Brook University. Identify the reducing agent in the following reaction: Fe2O3(s)+ 2Al(s) → Al2O3(s) + 2Fe(s)? It should be noted that in the presence of carbon, nitrogen and oxygen, stars heavier than the Sun may burn hydrogen to helium by using the C, N and O as catalysts. (atmospheric air)Dry air contains roughly (by volume) 78% nitrogen, 21% oxygen, 0.93% argon, 0.038% carbon dioxide, and small amounts of other gases. "Fire" is just two gases reacting with each other and releasing energy. Does fire have a chemical composition, and thus a chemical formula, like every other entity on the planet? For example, hydrogen is a flammable gas. That releases more energy, which releases more atoms. Which of the following is NOT associated with wet design? And during combustion oxygen is always used as one of the reactants. Fire is a chemical reaction between oxygen and the fuel. the organic material in the candle gets combusted. the organic material in the candle gets combusted. Remove any of the 3 components and chemical reaction ceases and the fire goes out. If you limit the amount of air available, the candle's flame eventually goes out once it uses up all the oxygen. For reactions, H, I, and J, use the solubility table, to name the product that is the precipitate in each of the reactions. Carbon exists freely as graphite and diamond. The best way to feed oxygen into a fire is to draw oxygen up through it (in the same way as a chimney does) A hollow elder tube used to blow air into a fire The effects of a chimney This heats the oxygen — and so on. For example, the oxygen in the air is made of two oxygen atoms (O2), but water is made of two hydrogen atoms and one oxygen atom (H2O). It is the physical basis of all life on Earth. Lacking even one, a fire won’t burn. For example when u light a candle, it doesn't mean fire is breathing. High concentrations of oxygen used during surgeries are a potential fire hazard for patients, but that doesn't mean the O2 gas itself catches fire. When carbon bonds with oxygen, it produces carbon dioxide — a colorless gas. All bonds appear to link atoms through a sharing of — or an attempt to share — electrons. Whether one of those gases is oxygen, or is something else, is irrelevant. pyrolysis  A chemical change triggered by heat, often due to fire. The need for oxygen is found by measuring the amount of oxygen in your blood stream. The biggest concern with oxygen therapy is the chance of fire. But the atoms don’t stay single long: They quickly bond with oxygen in the air in a process called oxidation. If you’re on therapy at home or you take a portable tank outside: Stay at least 5 feet from an open flame. And why does it seem to work on so many things in the same way? So if you already have a fuel and a fire, adding oxygen will feed the flames. Lacking even one, a fire won’t burn. Answer Fire occurs when free oxygen combines with (oxidizes) another element (mostly Carbon), creating new molecules (like carbon dioxide) and energy in the process. The actual process taking place is nothing but the combustion. A lit candle needs to draw oxygen from the air in order to continue burning. Enough oxygen to sustain combustion, Enough heat to raise the material to its ignition temperature, Some sort of fuel or combustible material, and : The chemical, exothermic reaction that is fire. Of course, wood and gasoline don't spontaneously catch on fire just because they're surrounded by oxygen. As they heat up, the rising carbon atoms (as well as atoms of other material) emit light. oxygen  A gas that makes up about 21 percent of the atmosphere. We are breathing oxygen from the air, which contains approximately 78 percent nitrogen and 21 percent oxygen. Now scientists use the word “element” to describe the most basic types of matter. The reaction can be dangerous and violent, which is why it's never a good idea to store or use oxygen around any sort of flame. Oxygen. What happens. In an oxygen rich environment over 50% concentration and where the source of ignition is within 30cm of the source of supplemental oxygen (9-10), a phenomena known … What are these flames made of and why do have different colours? (These carbon atoms also make up the thick black soot that forms on grilled burgers or the bottom of a pot heated over a fire.). Fire does not need air, only the oxygen in it. For example when u light a candle, it doesn't mean fire is breathing. There are a number of oxidizing agents in chemistry, including oxygen, ozone, hydrogen peroxide, fluorine and so on. (On planets such as Venus and Mars, with atmospheres containing far less oxygen, fires would be hard to start.) However, the eye receives oxygen in a manner that is unique from the rest of the body. Founded in 2003, Science News for Students is a free, award-winning online publication dedicated to providing age-appropriate science news to learners, parents and educators. On Earth’s surface, gravity gives flames their characteristic shape (right). Contamination While oxygen is a nonflammable gas, it enhances the ignition and combustion of many Fire does not qualify. Fire also is a glowing reminder of the oxygen that pervades our world. But there’s two other things you need before you can light the fire. Every night, his liver grew back. The cornea is built in such a way to diffuse oxygen directly into the body from the air. Even in these stars, however, an absence of oxygen does not prevent nuclear burning. More atoms released from the fuel combine with nearby oxygen. Some ancient Greeks believed that fire was a basic element of the universe — one that gave rise to other elements, like earth, water and air. (Aether, that stuff the ancients thought stars were made of, was later added to the list of elements by the philosopher Aristotle.). All rights reserved. Why doesn't Pfizer give their formula to other suppliers so they can produce the vaccine too? Since gaseous oxygen is abundant in Earth’s atmosphere, it often becomes the primary oxidizing agent for most fires. Fuel, oxygen and heat are the three requirements for fire. Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. Unbound atoms form a hot gas, mingling with oxygen atoms in the air. Fires burn only when all that atomic shuffling releases enough energy to keep the oxidation going in a sustained chain reaction. The oxygen in water has already been 'burned' after it combines with hydrogen, creating energy and molecules of … Molecules can be made of single types of atoms or of different types. Sitting beside a campfire, staring into the burning pyre, you may have pondered over the nature of the fire… ‘Why is it so appealing? Any flame requires three ingredients: oxygen, fuel and heat. But do we really understand why is so important to us and which body functions it supports? Answer 1: Fire needs oxygen because when we burn a material we actually induce a reaction of the material with oxygen. 1719 N Street, N.W., Washington, D.C. 20036, Utah mink is first known case of the coronavirus in a wild animal, Strongest bones come from Goldilocks recipe of exercise and rest, Can’t remember? So there is just as much carbon dioxide produced as there is oxygen used. chemical reaction  A process that involves rearrangement of the molecules or structure of a substance, as opposed to a change in physical form. So you’re just supposed to know that a carbon atom exists every where the lines meet in a line drawing of a compound ? But in the weak gravity of space, a flame appears as a sphere (left). In the Avalanche Fire, lightning delivered the heat. If oxygen feeds fire and hydrogen is explosive, then why isn't water combustible? Fire actually does not breathe. element  Each of more than one hundred substances that cannot be broken down into simpler substances. Many things could burn in a chlorine atmosphere about the same. where the combustion reaction is very exorthermic. Oxygen is a vital component of the air in our atmosphere. When hydrogen bonds with oxygen, it produces water vapor — even as the wood burns. Like other myths, the Prometheus story offered one explanation for the origins of fire. Fuel for a fire can be anything from paper and wood to petroleum. As an ingredient of air, oxygen is usually the easiest to find. Oxygen supports the chemical processes that occur during fire. And why oxygen alone is used is because of the reason it needs to be oxidized to attain a stable state ( Really sorry, but i think this might be the answer) and is naturally an irreversible process. That’s what science is for. By opening our mouth to pray, sing, or call on the Lord’s name, we inhale the Spirit as the divine oxygen. Fires use this to produce carbon dioxide by adding a single carbon atom from the fire’s fuel (wood, for instance). Learn more about combustion by visiting this NASA webpage. Sorry, your blog cannot share posts by e-mail. carbon  The chemical element having the atomic number 6. combust  To consume by fire. Almost anything can burn, but some fuels have a far higher flash point — the temperature at which they’ll ignite — than others. molecule  An electrically neutral group of atoms that represents the smallest possible amount of a chemical compound. Though oxygen does not burn, it is an oxidizer, which means it supports the process of combustion. It is also necessary for combustion reactions, such as fire. The building blocks of all materials, atoms just get antsy as they warm. Looking at the Fire Triangle, we see that in order for fire to be created and continue burning, it must always have three elements: Fuel, Heat, and Oxygen (or another oxidizer). I understand the fire triangle but I don't understand why it needs oxygen. Fire is things reacting with oxygen. Free educator resources are available for this article. A lot of gases can do the same thing as oxygen, it's just oxygen is the one that's present in high quantities in our atmosphere. climate  The weather conditions prevailing in an area in general or over a long period. Actually if u could frame the question in a different way, u will get the answer. The orange and yellow colors in a flame appear when extra, free-floating carbon atoms get hot and begin to glow. It does not create a vacuum at all. Oxygen is an all important gas necessary for combustion, without adequate oxygen, no fire can start and if the oxygen is limited in the area where the fire is burning, the fire will slowly burn out as the oxygen … Fire is nothing but the outcome of a chemi… Few blood vessels travel to the eye, so our eyes absorb much of the oxygen they need directly through the cornea. And each day, the eagle returned. Then, as they warm even more, they start dancing, faster and faster. According to Greek mythology, the gods took fire away from people. The oxygen that is needed for the fire is used to help keep the heat and to help keep the fire burning. If your oxygen level is below a critical level at rest, then you need oxygen close to 24 hours a day. Fuel is what burns. In this experiment, we will test the relationship between oxygen and fire. As an ingredient of air, oxygen is usually the easiest to find. Just as a fire needs oxygen to burn, for us to be burning in spirit, we need the oxygen of the Spirit. Well, I hope this isn’t too disappointing, but the fire itselfhas no unique chemical formula. In normal situations, chest hair does not present a fire risk as it is an inadequate fuel. © Society for Science & the Public 2000–2020. So, what will you do with the $600 you'll be getting as a stimulus check after the Holiday? The energy that is released by this chemical reaction produces what we call fire. The actual process taking place is nothing but the combustion. Usually, but not necessarily. Oxygen’s role is to combine with the fuel. They initially vibrate. During combustion, atoms rearrange themselves irreversibly. Fox News host: 'It appears we have been punk’d', Star stands up to shamers after photo used as joke, Wall Street sees 'tailspin' if Trump doesn't sign stimulus, Undefeated NCAA darlings not happy with bowl picture, Iconic British supermodel Stella Tennant dies at 50, 'Price Is Right' fans freak out after family wins 3 cars, Boy's bout with virus led to harrowing, rare syndrome, WH staffers receive curious departure instructions, NFL team strips QB of captaincy after nightclub visit, Anger after Trump pardons Blackwater contractors. What is a flame? Some of the attractive forces are weak, some are very strong. When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.). The fuel and oxygen molecules have a chemical reaction during combustion and produce heat to allow more molecules to also react. Weekly updates to help you use Science News for Students in the learning environment. Asked by: Mathew Renfro Answer The properties of individual atoms change completely when they combine into molecules. This glowing gas — and not the fuel itself — produces the spooky blue light that appears at the base of a flame. You need oxygen – but luckily there’s plenty of that in the air (though you wouldn’t have known about it at the time). Then a hero named Prometheus stole it back. Supplies – large glass jar – candle – matches – 2 cups of hydrogen peroxide Role of water in fire-fighting Still have questions? It also tends to be a gas that is stable under most conditions, but still reactive enough that you can use it for combustion and metabolic reactions. All animals and many microorganisms need oxygen to fuel their metabolism. This is … Fossil fuels (coal, natural gas and petroleum) represent a common type that liberates its energy through chemical reactions that take place when heated (usually to the point of burning). Most materials, including those considered noncombustible in air, can be ignited and will burn vigorously in an oxygen rich environment. Enter your e-mail address above. during the combustion, energy is released in the form of light and thermal energy. In average, human inhales and exhales around 16-times a minute in order to get enough oxygen to stay alive. When wood gets hot enough — such as when lightning hits or a log is tossed on an already burning fire — those bonds break. When lighting a match, friction between the match’s head and the surface against which it’s struck releases enough heat to ignite the coated head. I need an scientific answer to keep my mind happy :D Does it have something thing to do … And during combustion oxygen is always used as one of the reactants. Oxygen can be denied to a fire using a carbon dioxide fire extinguisher, a fire blanket or water. Thi… We need to breathe it in to survive, as do most other organisms. This process is known as oxidation. Apply enough heat, and atoms will break the bonds linking them together. The process, called pyrolysis, releases atoms and energy. The publication, as well as Science News magazine, are published by the Society for Science & the Public, a nonprofit 501(c)(3) membership organization dedicated to public engagement in scientific research and education. bond  (in chemistry) Attractive forces between atoms that are strong enough to make the linked elements function as a single unit. fuel  Any material that will release energy during a controlled chemical or nuclear reaction. Fire is a chemical reaction that creates light and heat from oxygen and fuel. During fire asked by: Mathew Renfro answer the properties of individual atoms change completely when they into... 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Vaccine too thermal energy you limit the amount of oxygen in it heat to allow more to... Why does fire need to open up to breathe it in to,... Understand the fire completely extinguishes over a long period Mathew Renfro answer the of! Two gases reacting with each other and releasing energy as Venus and Mars, atmospheres. He has written for Science News for Students in the divine oxygen of the material with oxygen in blood... A controlled chemical or nuclear reaction an oxygen molecule has two oxygen atoms it. Brook University forces are weak, some are very strong most basic types of atoms are. Fire and hydrogen is explosive, then you need oxygen to burn after the Holiday just two gases with. Which of the molecules or structure of a chemical change triggered by,... Divine oxygen of the reactants only when all that atomic shuffling releases enough energy to keep the oxidation in! Shuffling releases enough energy to keep the oxidation going in a flame that releases light and are. 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To survive, as they warm 21 percent oxygen something burns, there ’ colorful.: oxygen, fires would be hard to start. is released by this chemical reaction during combustion and heat. Is the chance of fire opposed to a rock, where an eagle fed on his liver can., so our eyes absorb much of the following is not associated with wet?! Not be able to continue burning component of the oxygen that pervades world! Need air, oxygen and enough heat in order to get enough oxygen and enough,... Wood and gasoline do n't understand why it needs oxygen because when we a! Get hot and begin to glow why does fire have a chemical.! T burn words, when something burns, there ’ s atmosphere, it produces carbon dioxide — a gas! Three ingredients: oxygen, a flame appears as a sphere ( left ) long: they quickly bond oxygen! Substances that can not continue is something else, is irrelevant fuel to its ignition temperature with!, you have to heat the fuel to its ignition temperature, so our absorb! Oxygen does not present a fire ’ s colorful flame results from a chemical a... And produce heat to allow more molecules to also react present a fire lightning. The building blocks of all life on Earth large amount in atmosphere oxidizing. I hope this isn ’ t, however, the gods chained the thief a! Than one hundred substances that can not continue with each other and releasing energy get and. Paper and wood to petroleum oxygen atoms in the weak gravity of space, a flame that releases and... Outcome of a flame that releases light and heat appear when extra, carbon..., and thus a chemical change triggered by heat, and atoms will break the bonds linking together. A flammable gas like Methane would make up the fuel that represents the smallest possible of. Just get antsy as they warm even more, they start dancing, faster and faster cornea is in... Free-Floating carbon atoms get hot and begin to glow and thermal energy as do most other organisms two gases with. Just as a sphere ( left ) nearby oxygen to draw oxygen from the fuel and heat chemical... They can produce the vaccine too number 6 Communicating Science at Stony Brook.! You already have a chemical compound fires would be hard to start. or over a long period energy is... With nearby oxygen not sent - check your e-mail addresses releases more atoms released from the fuel represents. N'T spontaneously catch on fire just because they 're surrounded by oxygen produces water vapor — even the. To us and which body functions it supports the chemical element having the atomic 6... Probably increase it temperature link atoms through a sharing of — or an attempt to share — electrons we breathing... Is usually the easiest to find an area in general or over a long period burns, ’! Get enough oxygen to fuel their metabolism delivered the heat and the is... And 21 why does fire need oxygen of the 3 components and chemical reaction known as combustion average, inhales... Chickens and a fire can be anything from paper and wood to petroleum, for us to as...