Why does air bubble appear to come from the surface of the metal container/vessel when heated?
140901
It will not produce any air bubbles if it has no H2O.If it has H2O,air bubbles will produce because the H2O molicules at the bottom get heated and it runs as the tail gets heated monkey and go to the top and it will send the next molecule in the bottom gets heated and comes to top and the whole cycle will be again repeate and repeate.
283659
Because the bottle is not really empty, it is filled with air.  The air expands when it is heated because the molecules move faster, bump against each other, and require more space.
526158
If you mean the 'buzz' like sound, it is due to surface tension of water: The molecule bonds on the surface layer resist against transfer of heat from hot surface to water. Therefore, the energy first is consumed to vibrate the molecule bonds until they get free to absorb energy for boiling. This vibration is the reason of that sound.
651599
It's really not a matter of distance from the sun, it is a matter of space being a vacuum.  The other issue is that "air" is not normally present or contained in a spacecraft.  Most spacecraft storing gasses contain hydrazine for propulsion.  If you are talking about a manned spacecraft such as the ISS then you would be talking about liquid oxygen.  If the oxygen tank ruptured pressure would go to zero, the liquid would instantly boil and the resultant gas would dissipate.
753710
take a 9 volt or higher battery,attach a wire to the pos terminal and 1 to the negative terminal...stick wires in water dont let em touch...after a while youll see bubbles on each wire....Hydrogen will be the bubbles on 1 wire and oxygen on the other...this is splitting the water molcules..
68409
Okay inside the curnal there is some moisture. And when it heats up the water expands and causes steam so when this happens there becomes less and less room inside the curnal and eventually explodes. Thus causing popcorn to pop.
460095
*Advertisement*\n*voice-over*\n"Are you tired of factually incorrect answers?"\n"Are you tired of answers that make a mockery of your question?"\n"Are you disappointed that your good question didn't get the response it deserved?"\n\nNow, there is no need to worry, as we introduce you to the most reliable answering machine- \nBATMAN!! *Cheers*\n\nTa daaaa..\n\n*End of commercial*\n\nHi Jade,\n\nI've got the answer! Here it comes- \nPeroxide bubbles because of constant production of oxygen gas as a result of spontaneous decomposition of peroxide.\n\nThe oxidation state of oxygen in peroxide(H2O2) is (-1) i.e. one electron for each oxygen atom.\n\nIn water (H20), the oxidation state is (-2) i.e two electrons for one oxygen atom. \n\nIn an oxygen molecule (O2), the oxidation state is zero. \n\nNow, the aqueous solutions of hydrogen peroxide spontaneously decomposes like this-\n\nOne molecule of Peroxide (liquid) ----> One molecule of Water (Liquid) + Half molecule of Oxygen (gaseous)\n\nSymbolically-\nH202 (l)   -------> H2O (l) + (1/2)O2 (g)\n(Dammit, how do I put numbers in sub-script and super-script?)\n\nNow, the Oxygen produced here causes production of bubbles.\n\nThis decomposition occurs slowly but the presence of metal surfaces, traces of alkali (present in glass) strongly catalyze the reaction. \n\nSo, if you don't want all your peroxide to convert into water, don't keep it in metal or glass bottles! Keep it in wax-lined glass or plastic vessels in the presence of stabilizers like Urea.\n\nIt is also decomposed by exposure to light. \n\nAlso, keep it away from dust, dust (even in small quantities) induces explosive decomposition.
162321
Generaly what appear to be air bubble is actually vaporized water molecules. \nAt the boiling point high energy molecules of water convert to gasious state and thus they look in the form of bubble. As the water vapours are transparent like air we assume the bubbles to be made of air but actually the bubbles are filled with water vapours.\n\nHowever, in the very early stage of heating water the dissolved air scapes from water. Usually this escaping air does not form bubbles but sometimes tiny bubbles are also formed. Nevertheless, this happens much before actual boiling.
897178
Usually its ambient gram-positive bacteria or any of a host of fungi that float in the air on dust and dead skin cells.  Poor sterile technique can cause these to contaminate tubes.  You should always briefly heat up the lids of tubes over a flame before and after adding anything to them to create and outward convection of air.  Furthermore, you need to heat innoculation loops over flame until they are red-hot before scraping a colony.  Let it cool first, though.
1002846
If welding, then the tank must be metallic.  If the tank is metallic with no liner, then the acid would eat the tank, releasing hydrogen gas until the pressure built high enough to, potentially, blow up the tank.\n\nIf the tank has a liner, then the explosion may have been caused by current between the welding electrode and the welding base connection, since sulfuric acid is such a good conductor.  Such a current could electrolyze the solution, again emitting gasses that could cause the tank to explode.
260171
It isn't air! When water freezes all dissolved gases & other matter are not included!!! \n\nThe hydrogen bonds that form when water freezes creates an open structure. There is simply nothing in between those spaces.\n\nWe are talking about molecular structure, things at this level are so tiny that even thinking about what is in between is silly.\n\nIf there is anything between the spaces it is probably interstitial water molecules (those not hydrogen bonded inside the crystalline lattice structure - think of them as loose molecules of water).\n\nIce floats on water because it has expanded. That is all. Not because of what is in between the "spaces".\n\nSee, when you increase the surface area but have the same number of molecules present, you cause the object to become less dense. (it's less tightly packed...things that are tightly packed for their size are said to be more dense.)
1105070
Come on, you don't know?\n\nThe burner has a weighted base with a connector for a gas line (hose barb) and a vertical tube (barrel) rising from it. The hose barb is connected to a gas nozzle on the lab bench with rubber tubing. Most lab benches are equipped with multiple gas nozzles connected to a central gas source, as well as vacuum, nitrogen, and steam nozzles. The gas then flows up through the base through a small hole at the bottom of the barrel and is directed upward. There are open slots in the side of the tube bottom to admit air into the stream via the Venturi effect, and the gas burns at the top of the tube once ignited by a flame or spark.\n\nhttp://en.wikipedia.org/wiki/Bunsen_burner
152571
By heating the lid is bigger than it was, and bigger than the jar. So the lid is just seems like other bigger jar's.\nEven if you heated the metal lid and the gas together, you will get the same result, as jar's expansion is less than the lid's expansion.
484862
Let me start saying that I'm not making up this answer:\n\nSea foam is made of air bubbles separated by a film of liquid. Air bubbles in fresh water unite, while air bubbles in salt water bounce off of each other. When these air bubbles rise to the surface in the ocean, they burst and release salt spray into the air. It is believed that most of the airborne salt comes from the bursting of bubbles.
837660
Silver is one of the most reflective elements.  It will reflect the heat back into the vessel instead of allowing it to escape.
320794
Aeration of the liquid causes the whitish tinge, but essentially it is not white. You can compare two liquid's froth and notice a slight color difference in the froth. It may just be a hint, but it's there.
508045
Take a spray bottle, add a small amount of dish soap and fill with water.  Spray the surface down and look for the bubbling.  Or you could take it to a pool or lake and do it that way.  Obviously the air mattress must be full of air first.  LOL.