On Earth’s surface, gravity gives flames their characteristic shape (right). For example, hydrogen is a flammable gas. Whether one of those gases is oxygen, or is something else, is irrelevant. the organic material in the candle gets combusted. All rights reserved. The orange and yellow colors in a flame appear when extra, free-floating carbon atoms get hot and begin to glow. Lacking even one, a fire won’t burn. Oxygen’s role is to combine with the fuel. chemical reaction  A process that involves rearrangement of the molecules or structure of a substance, as opposed to a change in physical form. Fuel for a fire can be anything from paper and wood to petroleum. Oxygen is a vital component of the air in our atmosphere. 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. The need for oxygen is found by measuring the amount of oxygen in your blood stream. The process, called pyrolysis, releases atoms and energy. Fire actually does not breathe. Stephen Ornes lives in Nashville, Tenn., and his family has two rabbits, six chickens and a cat. In other words, when something burns, there’s no un-burning it. Remove any of the 3 components and chemical reaction ceases and the fire goes out. Apply enough heat, and atoms will break the bonds linking them together. A flammable gas like Methane would make up the fuel, but would still need enough oxygen and enough heat in order to burn. The energy that is released by this chemical reaction produces what we call fire. This glowing gas — and not the fuel itself — produces the spooky blue light that appears at the base of a flame. Fires burn only when all that atomic shuffling releases enough energy to keep the oxidation going in a sustained chain reaction. 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. For example when u light a candle, it doesn't mean fire is breathing. Answer Fire occurs when free oxygen combines with (oxidizes) another element (mostly Carbon), creating new molecules (like carbon dioxide) and energy in the process. during the combustion, energy is released in the form of light and thermal energy. You need oxygen – but luckily there’s plenty of that in the air (though you wouldn’t have known about it at the time). So there is just as much carbon dioxide produced as there is oxygen used. But the atoms don’t stay single long: They quickly bond with oxygen in the air in a process called oxidation. 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Then, as they warm even more, they start dancing, faster and faster. Forcing oxygen onto a fire based on gas risks blowing it out. And each day, the eagle returned. That releases more energy, which releases more atoms. The biggest concern with oxygen therapy is the chance of fire. Fire is nothing but the outcome of a chemi… You need three ingredients to make fire: fuel (like wood or gasoline), oxygen and heat. And during combustion oxygen is always used as one of the reactants. And why does it seem to work on so many things in the same way? Just as a fire needs oxygen to burn, for us to be burning in spirit, we need the oxygen of the Spirit. Oxygen’s role is … Well, I hope this isn’t too disappointing, but the fire itselfhas no unique chemical formula. molecule  An electrically neutral group of atoms that represents the smallest possible amount of a chemical compound. Still have questions? This is why a … Fuel is what burns. 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. As an ingredient of air, oxygen is usually the easiest to find. so with use of oxygen ( very common and found in large amount in atmosphere ) oxidizing elements. The actual process taking place is nothing but the combustion. Get your answers by asking now. According to Greek mythology, the gods took fire away from people. Let’s begin at the beginning. 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. Fuel, oxygen and heat are the three requirements for fire. Combustion is the process of burning. This process is known as oxidation. There are a number of oxidizing agents in chemistry, including oxygen, ozone, hydrogen peroxide, fluorine and so on. If you limit the amount of air available, the candle's flame eventually goes out once it uses up all the oxygen. Every night, his liver grew back. But there’s two other things you need before you can light the fire. Post was not sent - check your e-mail addresses! A fire’s colorful flame results from a chemical reaction known as combustion. The actual process taking place is nothing but the combustion. 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? And during combustion oxygen is always used as one of the reactants. Sorry, your blog cannot share posts by e-mail. Weekly updates to help you use Science News for Students in the learning environment. Not atoms. So the fire is the side product of the reaction with oxygen. Molecules can be made of single types of atoms or of different types. 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. Explore more by visiting the website of the Alan Alda Center for Communicating Science at Stony Brook University. Lacking even one, a fire won’t burn. 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. With a decreased oxygen concentration, the combustion process slows. Join Yahoo Answers and get 100 points today. We need to breathe it in to survive, as do most other organisms. What is a flame? 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 … (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. where the combustion reaction is very exorthermic. In normal situations, chest hair does not present a fire risk as it is an inadequate fuel. climate  The weather conditions prevailing in an area in general or over a long period. This heats the oxygen — and so on. This is … If your oxygen level is below a critical level at rest, then you need oxygen close to 24 hours a day. Does fire have a chemical composition, and thus a chemical formula, like every other entity on the planet? So, the Sun can "burn" hydrogen to helium without the need for oxygen. 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. Since gaseous oxygen is abundant in Earth’s atmosphere, it often becomes the primary oxidizing agent for most fires. For example when u light a candle, it doesn't mean fire is breathing. Even in these stars, however, an absence of oxygen does not prevent nuclear burning. Fire actually does not breathe. The building blocks of all materials, atoms just get antsy as they warm. Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. For reactions, H, I, and J, use the solubility table, to name the product that is the precipitate in each of the reactions. fuel  Any material that will release energy during a controlled chemical or nuclear reaction. The fuel and oxygen molecules have a chemical reaction during combustion and produce heat to allow more molecules to also react. 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). In this experiment, we will test the relationship between oxygen and fire. Supplies – large glass jar – candle – matches – 2 cups of hydrogen peroxide 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. Wood, for example, contains molecules made from bound atoms of carbon, hydrogen and oxygen (and smaller amounts of other elements). Almost anything can burn, but some fuels have a far higher flash point — the temperature at which they’ll ignite — than others. 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. Few blood vessels travel to the eye, so our eyes absorb much of the oxygen they need directly through the cornea. However, the eye receives oxygen in a manner that is unique from the rest of the body. The oxygen in water has already been 'burned' after it combines with hydrogen, creating energy and molecules of … Free educator resources are available for this article. Why.....are you following?....Why does fire need to. the organic material in the candle gets combusted. Typically, fire comes from a chemical reaction between oxygen in the atmosphere and some sort of fuel (wood or gasoline, for example). It is also necessary for combustion reactions, such as fire. Any number of sources may supply heat. 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