Where does hydrogen peroxide come from? Is it man made?
970187
Hydrogen peroxide is man made using a process that only a chemist would understand. In the early days it was produced by burning barium salts to produce barium peroxide which, when dissolved into water, yielded H2O2.
779445
H2O2 or Hydrogen Peroxide is a corrosive and oxidizer and reacts with all types of metals (except stainless steel and aluminum), dirt, leather, ect. If you would like to see how 70% concentration reacts with a leather glove or laundry detergent. send me an E-Mail to m00nd0ct0r@yahoo.com and I'll send you the two videos later tonight when I get home form work.\n\nP.S. I'm working at a Hydrogen Peroxide plant right now.
201518
U have to ask questions clearly.\n\nIf the tissue extract contains enzyme catalase or peroxidase, surely the enzyme would decompose hydrogen peroxide to H2O and O2.
550185
This is chloroform, an anaesthetic. Chloroform can be stored as a liquid in the bottle but then evaporates very quickly once it's poured on the rag, so that the victim breathes it and falls asleep. Hydrogen peroxide would not work, as it does not have any anaesthetic qualities - it's just bleach. Chemically, chloroform is trichloromethane (CHCl3) and isn't used medically any more because it's toxic, although it is used to make some chemicals that keep your fridge cold!
249760
try looking at this website http://www.madehow.com/Volume-2/Bleach.html it gives you the history  and the raw materials that make it, i hope this helps
552733
Peroxide bubbles because of the presence of a substance called catalase; which is a chemical found in your blood and in the cells of your body.  What catalase does is help speed up the chemical reaction which changes peroxide from H2O2 to H2O - water - and the chemical reaction taking place is what forms the bubbles.
784390
Electrolysis of water causes the formation of hydrogen peroxide with the result of rapid redox reactions that would cause gel to run way too fast. Also, while water can conduct electricity, it  heats up when electrified. Depending on the voltage, the water can get hot enough to melt the gel.
559195
Now, THAT is what I call a challenging question! It requires some thinking in addition to the book-ish knowledge and I love it! But, before I continue with my answer, I'd just like to correct one statement:- "I know that peroxide reacts with metals and glass", It does NOT. Metals and glass act as catalysts i.e. they accelerate the reaction of conversion of Peroxide into Water and Oxygen but they don't participate in the reaction.\n\nNow coming to your question, the varying levels of fumes that you are observing have nothing to do with an organic reaction.\n\nLet's address all your situations one-by-one:\n======= ========== ============\n1- When you pour it around the faucet and it bubbles furiously around the crud and not on the spigot itself.\nThe reaction going on in there is the same ol' Peroxide converting to Water and Oxygen.\nOne molecule of Peroxide (liquid) ----> One molecule of Water (Liquid) + Half molecule of Oxygen (gaseous)\n\nWhich is Symbolically-\nH202 (l) -------> H2O (l) + (1/2)O2 (g)\n\nIt's just that the reaction takes place at a faster rate around the crud around the base! \n\nIn general, ANY rough surface acts as a CATALYST for this reaction. Try it yourself, put some peroxide on a smooth surface and then put some on a rough surface. You can easily see that it fumes and bubbles more on a rough surface. It is because on a rough surface there is more AMOUNT of surface on a given area due to all the unevenness of the surface. And more area accomodates more peroxide which leads to more reaction for a given area and hence a faster rate.\n\n======= ========== ============\n2. When you drop earings into peroxide, the whole earings don't bubble only the "gunk" does and when that's gone it stops!\n\nHmm.. This required a little bit of thought process: The "gunk" in your earrings can be two things-\na) Deposition of Dust or dead skin-\nIf this is the case, then the answer would be- "Rough surfaces and dust CATALYZE the reaction of conversion of Perxide into Water and Oxygen which I have already metioned."\n\nb) Deposition of METAL OXIDE because of rusting or corrosion  or tarnishing of your earring.\nNow, if THIS is the case, then the bubbles are coming out due to the REDUCTION reaction by peroxide in the acidic medium.\nLet's see what's happening in there-\nThe Metal Oxide on the surface of your metal earrings is an oxidising agent i.e. it releases Oxygen (Oxygen atom). In presence of an oxidising agent, the Peroxide acts as a reducing agent. It reacts with the oxygen atom like this-\n\nH2O2 (Peroxide) + [O] (Oxygen atom from the rust) -----> H20 (Water) + O2 (Oxygen molecule)\n\nYou can see that Oxygen is being released here, THAT CAUSES THE BUBBLES!\n\n======= ========== ============\n3- It bubbles on cuts but, not on normal skin!\nWhoa whoa whoa... Don't put it on your skin, the reaction of it's conversion to water is exothermic (gives out heat) and sometimes, explosive!\nNow, to answer the question, it might be the tiny dust particles in your abrasion that could be triggerin' off the decomposition reaction & causing the release of Oxygen gas bubbles \nOR as you might be knowing that the pH of the blood is MORE THAN 7, i.e. it is basic or alkaline in nature AND in alkaline solution, this reaction takes place-\nFerrous(Iron) Ions (Fe +3) + Peroxide (H2O2) + Hydroxyl Ions (OH-) ----------> Ferric (Iron) Ions (Fe 2+) + Water (H20) + OXygen Molecules\n\nDid you see that? One of the products in the reaction up there was Oxygen molecules!! Now, that means that we are gonna have some bubbles there as Oxygen gas is gonna bubble baby!\n\nP.S. This is perhaps the longest answer I have ever typed in my entire life!
1126341
Free radicals, during our process of intake and metaboism some of the oxygen are emerge in our body. These are the main free radical which is highly potensive to destroy our body. \n\nAs you can see, oxygen radicals are very powerful and that is the same one which leads for the corrosion of iron.\n\nIn the same way accumulation of free radicals are very much danger to the body. Almost all diseases in our body are due to the act of this highly reactive free radicals.\n\nThe anti-oxidants are the only one to fight against the free radicals. We can get all nececessary anit oxidants from the colored fruits. \n\nThe another method to come out of these free radicals is detoxify our body.\n\nHave a great day.
988193
Rinse with Hydrogen Peroxide twice a day.
674458
Hydrogen peroxide is a very strong oxidizing agent, read, very reactive.  When it mixes with nitrogen it releases heat by chemical reaction (that's also what happens in a combustion engine like a car).  And it makes water.  The heat would make the water into steam and in an enclosed system the increase in the volume will creat pressure, like when you warm up water for tea and it has to escape by blowing through the hole with high speed.  I hope that makes sense.  I'm trying for laymens terms.  I am not sure I succeeded.
166540
It's produced by the brain. However, I have some vague recollection of them making an inverse of dopamine molecule that can be absorber into the brain for like, diabetics or something, cant remember.
245701
Yeah. That's how they make it industrially.\n\nH2 + Cl2 --> 2HCl\n\nIt's not easy however, because it'll make HCl gas. You have to dissolve that gas in water for it to become hydrochloric acid. It also is highly exothermic, meaning it produces a lot of heat. Oh, by the way, if the gas comes into contact with your skin (you're made of mostly water), it'll form concentrated hydrochloric acid, right on your skin. Not fun. \n\nAn easier way is to making a dissolved table salt solution and add sulfuric acid, although obtaining sulfuric acid isn't easy either.\n\n2NaCl + H2SO4 --> 2HCl + Na2SO4\n\nDon't do it. You don't even know if it's chlorine and hydrogen gas, and you could get hurt very badly.
808555
oxidizing agent...perOXIDE
36166
You can rinse with Hydrogen peroxide just like regular mouthwash. It tastes TERRIBLE though. You are better off getting some Listerine(c)
365086
You can buy hydrogen peroxide from any drug store (like Longs) at 2-3% concentration. If you're talking about other things with it in it, laundry detergents, rocket fuel have hydrogen peroxide in it.
721215
In terms of molecular weight, water would be H20 which according to the period table of elements would have a molecular weight of 18 while Hydrogen peroxide or H202 would have a molecular weight of 34.  (molecular weight of hydrogen is one, while that of oxygen is 16).  Thus hydrogen peroxide would be heavier.