Hydrogen Peroxide
An investigation into how the amount of oxygen is produced by changing one variable effects the decomposition of Hydrogen Peroxide in the presence of the enzyme. This shows us that when the H2O2 has reacted with the catalyst this is what it produces. There are many ways in which the amount of oxygen produced could be affected. I believe that, surface area of the chip, temperature of liquid that is reacting, the concentration of the liquid or the amount used are going to be the major variables in the experiment. From these variables I clearly believe that looking at the concentration of the liquid, in this case H2O2, will be the best experiment to do. Also I believe that this will give us a strong set of results with which we will be able to pull good clear conclusions from. To keep all other variables constant so they do not influence my results, we will do all experiments in the same room hopefully the temperature remains constant in that one room, all potato chips will be cut with a size 4 cork bora and then cut into 3 centimetres, as to keep each test fair. Also the volume of the concentration H2O2 will remai . . .
Looking back on experiment I believe that there are many ways to improve it. Each of these mixtures will be tested three times with the potato chip, this way we can see if there are any “way out” results from the other two and so with which we can discard that one and get a clear average from the remaining 2 or 3 results, hopefully this will ensure reliability. Also we must make sure the cork bora and scalpel are used on a tile and not on our hands when cutting the paper. In our case the enzymes take on the H2O2 molecules to produce oxygen. As we kept the potato chip the same throughout the experiment the one thing that mattered to us was the concentration of the H2O2 and so as we predicted with the concentration at its highest we found we produced the most oxygen this is because there more reactions taking place and more collision and so there was a higher percentage of reactions. One problem with our preliminary experiments was that we had to change the Hydrogen peroxide because we felt that some were to old, and were probably not as concentrated. From the research I have carried out, I have found information that shows clearly one molecule hitting another and combining to form and end produce. All that is best is that the same person reads it off just in case someone else´s vision is not as good. Naturally, the kinetic energy of the molecules would be higher when heated up, and so if there is a higher concentration although the temperature stays the same there will be a higher chance that because there are more molecules there will be more successful reactions, and so the overall reaction will occur much faster. These are the results I collected after my experiments: Concentration Oxygen produced Average Produced Time (min) H2O2 + H2O In ml3 In ml3 10 5. But because water molecules are now in there as well, the enzymes are finding fewer Hydrogen peroxide molecules so there are less reactions taking place. To get an even bigger picture of this experiment we know that our 100% is 10ml3 of H2O2 so if we increase this to 110% we will have 11ml3 of H2O2 therefore exposing more molecules to the enzymes. We will overcome this problem by paralysing the measuring cylinder with a clamp stand, and another to hold the boiling tube where the H2O2 and potato chip are; which contain the enzymes used to catalyse the H2O2 to help produce the oxygen a lot quicker.
Common topics in this essay:
H2O2 Starting, H2O Concentrated, O2 H2O2, Hydrogen Peroxide, Average Produced, oxygen produced, hydrogen peroxide, measuring cylinder, potato chip, amount oxygen, cork bora, concentration h2o2, amount oxygen produced, h2o2 +, Concentration Oxygen, water measuring cylinder, results collected, 5 6+4, 14 5 2+8, concentration h2o2 water, | 
Acceptance Essays
