Catalase breaks down H2O2 into water and oxygen is there any enzyme that would turn water and oxygen into H2O2
958318
I don't think so, at least not naturally.  You would need to pump in a heck of a lot of energy to make the reverse reacction happen.
565269
Complete oxidation of ascorbic acid would produce carbon dioxide and water.  The reaction would be:\n\nC6H8O6 + 5 O2 ===>  6 CO2 +  4 H2O
163443
The enzyme catalase is a protein molecule. Its shape, particularly the shape of the active site, is changed by variation of pH from pH7.\nGreater the change away from about pH7, greater the alteration of shape.\nAs the shape of the active site changes the enzyme is less and less effective.\nIncreases or decreases in pH will reach the point where the enzyme's shape is permanently changed - the enzyme is denatured.
194813
It's hydrogen peroxide.  It's commonly used as a disinfectant and can be found at most drug stores.  Incidentally, you'll find it in a dark colored opaque bottle because it breaks apart into hydrogen and oxygen gas, and light speeds up this process.\n\nEdit: \n>>>but it decomposes into water and oxygen gas, not hydrogen and oxygen gas.<<<\n\nWoops... you're right.  I need to get more sleep.\n\nIt decomposes according to the reaction:\n\n2(H2O2) -> 2(H2O) + O2
1166728
the water substance drowns the oxygen out of the "would be fire" in the hydrogen peroxide\n\nfire needs O2 to live
781569
Starch is not very soluble in water.\n\nMost important, however, is the type of assay used for glucose. A simple oxidation reaction would not be glucose specific... it would work just as well on any reducing sugar. Instead, the standard assays for glucose are enzymatic. You transform glucose into something which absorbs light and measure with a photometric spectrometer.\n\nEnzymes that have glucose as a substrate will not act on starch.
436514
Water and Carbon dioxide. With the help of an enzyme called carbonic anhydrase.
661982
hydrogen , \nwater is H2O = 2 H + O so naturally 2/3 is hydrogen. and water is a compound, hydrogen and oxygen are elements.
199855
Electrolysis. Running a current through water will separate it into hydrogen and oxygen.
311126
I'm not exactly sure what you're talking about, but yes, water can be separated into hydrogen gas (H2) and oxygen gas(O2). It's the following redox reaction.\n\nreduction: 2e- + 2H+ + H2O --> H2 + H2O\noxidation: 2H2O --> O2 + 4H+ + 4e-\n\nMultiply the reduction reaction by two and add the two together to get the final reaction.\n\n2H2O --> 2H2 + O2\n\nThe hydrogen goes down from a +1 state to a 0 state, and the oxygen goes up from a -2 state to a 0 state.
863396
Each molecule of catalase is a tetramer of four polypeptide chains. Each chain is composed of more than 500 amino acids. Located within this tetramer are four porphyrin heme groups that are very much like the familiar hemoglobins, cytochromes, chlorophylls and nitrogen-fixing enzymes in legumes.  For the same reason hemoglobin (blood) is red, so is catalase.  The heme group has an iron (Fe) atom that is the source of the red color.  It's also the same reason rust (iron oxide) is reddish-orange.
598825
Peroxide is H2O2. If it were in a clear bottle, that second oxygen would evaporate and it would become H20...water.
181034
Photosynthesis produces oxygen as a side reaction from the light reaction, where H2O (water) is oxidized into O2, oxygen.  The electrons are taken from H2O into the ultimate electron acceptor in the light reaction HADPH, which carries it for later enzymes to use in dehydrogenase reactions.  What is released from this is oxygen.
876582
Ethanol, or ethyl alcohol.\n\nSplit the water (H2O) into H and OH.\nSplit one of the bonds of the double bond two form two new single bonds.\nAttach the H to one, the OH to the other, to form H3C-CH2OH.
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.
813894
There is an easy one using enzyme catalysis.  Use hydrogen peroxide solution from the local pharmacy or grocery store.  Put some in a test tube and drop a fresh slice of potato in it.\n\nThe potato has catalase enzyme in it.  This enzyme catalyses the decomposition of hydrogen peroxide to water and oxygen as such:\n\n2 H2O2  >(Catalase)> 2 H2O + O2\n\nThe activity of the enzyme catalyst can be observed by the bubbles of oxygen gas that form during the reaction.
199728
Amylase is an enzyme, that is, it is a catalist for the reaction (eases and accelerates it) but does not participate in the reaction itself. Starch is a polysaccharide formed by molecules of glucose, and what happens is that starch breaks down, i.e. the bonds between these glucose molecules are hydrolized (destroyed by addition of water, H2O), resulting in smaller polysaccharids (maltose), disaccharids and eventually single glucoses (monosaccharides). This reaction releases energy, the energy that was previously stored in those chemical bonds during the synthesis of starch; thus, it's exergonic (in fact all breakdown reactions - catabolism- are exergonic/exothermic).