when burning an elemental gas, what happens?
606970
Ok, what gas is required for combustion??  OXYGEN!\nHydrogen and oxygen combine and release large amounts of energy/heat while form water in small amounts (in the form of vapor).  \n\nAs for other gases, carbon is the element "burning", but there must be oxygen present in the moluecule or in the environment to burn.\n\nThis is different for hydrogen in stars, which are undergoing fusion.
1184525
Depends on what is being split and where the combustion takes place.  The combustion alone will produce changes of oxygen, hydrogen and any other chemical in the air or around the combustion.  The remaining products will more than like be water, carbon min-oxide, etc.
232646
Fire is oxidation of a material at a fast rate. The aluminum foil you put in the stove getx a coat of aluminum oxide on it and then goes no further as a gas oven is not hot enough to "burn" aluminum. Aluminum can be burned if one gets the temperature hot enough. This is called the thermite reaction and happens when finely divided aluminum, such as shavings is mixed with iron oxide (rust) and the mixture set afire with a fuse perhaps made from thin strips of magnesium metal. The iron oxide or rust becomes iron metal again and the aluminum becomes aluminum oxide or alumina. The heat is intense enough to melt iron.Such reactions are used in industry to perform welding. It is all quite dangerous and a person not familiar with the laws of chemistry may become blinded by the light of the reactions involved or harmed by server burns. Do not try this at home.
1047027
Simple really...the H has already burned!  That's what formed the water.\n\nBurning is a chemical reaction...basically elements recombine w/ other elements.  The water is the end result of the burning, and cannot burn further.
978836
The same way everything else burns: by rapidly combining with oxygen. \n\nIn order for anything to burn, three components must be in place:\n\n1) Fuel. You must have some substance ready to oxidize.\n2) Oxygen. Obviously, you have to have oxygen available in order to oxidize something. Some fuels, like gunpowder, contain oxydizers (chemicals that store oxygen), and can provide their own oxygen to sustain the reaction.\n3) Heat. Every substance has a "flashpoint", the temperature at which the molecules of that substance become unstable enough to begin oxydizing. In the case of paper, that temperature is 451 degrees Farenheit. (Immortalized in Ray Bradbury'sclassic sci-fi novel "Farenheit 451".)\n\nPaper molecules, like all organic molecules, are made of carbon, hydrogen, and oxygen atoms. In a burn reaction, these molecules break apart, and the atoms reform into simpler molecules: water vapor, carbon dioxide, carbon monoxide, etc.
837108
The sun "burns" on the concept of nuclear fussion, where hydrogen is converted to helium. Once all hydrogen has been converted it then produces lithium and all other elements in the periodic table until iron.\n\nThis process creates energy and is what you are referring to as "burning".\n\nNuclear fussion is a nuclear reaction. Processes like creating a fire are chemical reactions involing oxygen
191415
The electrolysis of water with the o2 and h collected in seperate test tubes a lit match will ignite the hydrogen...POP! and a matchstick that has been blown out but still has a hot ember will burst into flame in the oxygen.
948473
Can't answer this one accurately with the limited information you gave. What is being burned? Under what conditions is it being burned?  When you're talking of by products as opposed to products, the composition of the combustible material enters the equation. If you are burning a pure hydrocarbon fuel such as methane the products  are water vapor and carbon dioxide. Depending upon the conditions under which it was burned you might also get carbon monoxide. If the combustible material contained sulfur, nitrogen or other elements you might get gases such as sulfur dioxide or nitrous oxide as well.
1060974
When hydrogen burns, it produces water.  That's the end result of the burning process.  It would be like you saying, seriously, why can't we cook already cooked bread to get fresh bread.  You already cooked it, it's not going to change anymore.\nWater also doesn't break apart into it's individual atoms very easily.  You either need electricity or heat hotter than the sun.  But if you do break it up, yep, it'll burn.  But it's not water then, it's 2 hydrogens and an oxygen.  And when it burns it'll make water.
1721
If you start a fire in zero gravity then (as long as it is not against the wall of the space craft) it will burn as a sphere.  The fire needs oxygen so will expand, however, as it expands more heat is lost, and the fire may go out.\n\nSo it would be a hot, glowing sphere that expands and then goes out.\n\nOf course if it is contact with the wall or something then the nature of the fire depend on the fuels available, etc.
372374
You didn't specify the fuel but in general burning is a chemical reaction with oxygen or an oxidation process.  This process releases energy in some form.  Heat is one of those forms, mechanical motion, and light are others.\n\nThere is no requirement for carbon in the process of burning fuel as is stated by some other answerer's.  Let's, for example, consider burning hydrogen.  The hydrogen combines with the oxygen (oxidizes) which releases energy in the form of heat.  The Hindenburg disaster had very little carbon in its primary burn.\n\nSince this combining of 2 or more elements seems to be a requirement for burning (at least one of them being oxygen) it is possible to un-combine them by adding energy to revert to the initial elements.  Again for simplicity, let's use hydrogen and oxygen [so abundant on this planet].  When the hydrogen and oxygen are burned in proper balanced proportions (two atoms of hydrogen to one oxygen in stoichiometric proportions) there is only water and energy.  The energy we use to move things, light things, heat things, etc.  The water in this case is waste.  You can perform electrolysis on the water and separate the O2 and H2. You can then burn them again releasing the energy that you put back into the separation through electrolysis.  This is just un-burning the hydrogen and oxygen by adding energy.\n\nTypically one thinks of burning as a non-reversable process but only when you're talking about proteins...like un-frying an egg.  \n\nA string of hydrocarbons burned with "air" is also more complicated because we're using a large percentage of nitrogen along with our oxygen.  The ratio is roughly 80/20 Nitrogen to Oxygen. To maintain the balance of equations (that stoichiometric word) we'd be working with nitrogen oxides (burned nitrogen) like nitric oxide and nitrogen dioxide and many carbon by-products like carbon monoxide and carbon dioxide.\n\nAll in all it's a big mess.\n\nI hope that fully answered your question.
766354
Think about it...... How quickly will it catch & burn?   How Furiously will it burn?  Is it so reactive it can explode? \nWill dust explode ?\nYupper ... good stuff to know when your crawling into a smoke filled area  ... knowing what materials are burning and how fast the burn is handy to have.
798111
Combustion or burning is a complex sequence of chemical reactions between a fuel and an oxidant accompanied by the production of heat or both heat and light in the form of either a glow or flames.\n\nIn a complete combustion reaction, a compound reacts with an oxidizing element, and the products are compounds of each element in the fuel with the oxidizing element.
468193
Yes. The gas that is expelled is Methane which is flammable. It can be dangerous to play this trick as the gas can burn faster than you expel it, in doing so you can receive severe burns to the anus and rectum.
29477
For the most part, fire is a mixture of hot gases. Flames are the result of a chemical reaction, primarily between oxygen in air and a fuel, such as wood or propane. In addition to other products, the reaction produces carbon dioxide, steam, light, and heat. If the flame is hot enough, the gases are ionized and become yet another state of matter: plasma.
361585
Put the lighted end of a glowing splinter into a test tube containing the subject gas. If it burns or bursts into flames, you have oxygen in there. But if the splinter makes a pop, you have hydrogen instead. If it is extinguished, you got carbon dioxide
1002501
simple answer: expands till you heat it enough, then it breaks apart. (The gas breaks apart at the molecular level)\n\nbetter answer:\n\nWhen you increase the temperature of a substance the molecules store the energy in different forms. Forms such as vibrations, stretches, and translational motion. As the temperature is put in the system the air will increase its molecular motions (vibrations, stretches, translations...) the air becomes hot and the molecules move much quicker due to absorbed thermal energy. If you heat it enough you will rip apart the molecules and possibly start seeing a purple plasma. You can do this easily with a high voltage teslacoil.\nIf the closing material is fragile enough you can cause a pop! \n\nAdditionally, when fluids are heated the oxygen is removed slowly thus reheating can lead to superheating.\n\nAs you heat gasses, depending on their stucture, you can begin different modes of motion and change the heat capacity.