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Find out the volume of oxygen produced when placed in Hydrogen peroxide.

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Enzyme Investigation Aim My aim is to find out the volume of oxygen produced when placed in Hydrogen peroxide. Introduction Each Enzyme is a complete three dimensional molecule. Part of its structure has a particular shape that is all important. Enzymes reduce the amount of energy needed for molecules to react together. They are unchanged at the end of the reaction they speed up. They are specific, i.e. they will only speed up the rate of reaction. Enzymes are affected by temperature; this diagram shows the effect of temperature on enzyme action. From 0�c to optimum temperature of the enzyme, the rate increases. The optimum conditions are the conditions under which enzymes work best; this is usually around 37�c for most enzymes. Below this temperature the rate of reaction is slow, above 40�c the enzymes becomes denatured. Denaturing means that the enzyme is permanently destroyed. Enzymes catalyse every reaction in every living organism. ...read more.


Also start the stop watch at the same time. 6. At every minute record your results, do this for 4 minutes. Once done wash out the conical flask and fill it up again with 30cm� of hydrogen peroxide. Then do again twice more. 7. Then cut the potato strip so the surface area is bigger. The first surface area should be 18cm� then 26cm�, 34cm�and 42cm�. Do all these 3 times each and don't forget to mark down all of the results. Fair Test Table What I changed What I kept the same What changed as a result 1- The volume of the potato strips 1- The same amount of hydrogen peroxide 1- The amount of oxygen being produced 2- The hydrogen peroxide 2- The same conical flask 3- The potato strips 3- The same size potato strip Results Surface Area (cm�) 1 minute 2 minutes 3 minutes 4 minutes 18 7 11 16 21 18 7 12 15 20 18 8 11 15 19 26 8 14 19 23 26 9 15 19 ...read more.


This can be shown on the graph. All my results go up as each minute passes; if you look at the graph I have drawn it will show you this. Evaluation As you can see on my graph that I have drawn, my experiment was very successful. There were no anomalous all the results went well and are correct. They have proven that my prediction was correct. I made sure that the experiment was correct and fair. There were no difficulties in this experiment because we both worked hard and stayed on task at all times. I repeated each surface area 3 times, and they were all very close together. To make sure my results were correct; I checked them with a teacher. There aren't many improvements that I could have made to the experiment. The only improvement that I could have made would be to put the rubber cork on top of the conical flask a little quicker, this would let less oxygen out of the conical flask. To do this I could have got someone else to do it because our hands are full. Peter Tyler - 1 - ...read more.

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