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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




HYDROGEN PEROXIDE AND LIVER.



CONTENTS PAGE;

Page 2: background information

Page 3: aim and method

Page 4: Independent Variable and dependent variable

Page 5: Hypothesis + pilot study + table of results

Page 6: Analysis + Evaluation

Page 7: reliability of evidence + reliability…

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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




HYDROGEN PEROXIDE AND WATER



BACKGROUND INFORMATION

Enzyme found in most of plant and animal cells that functions as an oxidative catalyst. It decomposes
hydrogen peroxide into oxygen and water. Catalyst is a common enzyme found in almost all living
organisms which are exposed to…

Page 3

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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




If particle collide with less energy than the activation energy then there will be no reaction. The
particles will just bounce off each other. Look at the diagrams below.




At a higher concentration, there are more particles in the same amount of space. This…

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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




At higher temperatures, there are going to be more collisions than at low temperatures because as
the temperature increases the reactant particles move faster and are more likely to collide with each
other.




Aim;

The aim of my investigation is to find out how…

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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




The experiment was watched and timed with one person using the stop watch. The others
were taking observations and writing them down as the experiment was still running.



Apparatus setup;




The reason as to why we used this method was because it was a…

Page 6

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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




Hypothesis;

I believe the reaction rate and the production from hydrogen peroxide and liver solution would both
increase as the concentrations of hydrogen peroxide increased. As the amount of catalyse is
significant in the liver and the reaction would increase if the reactant was…

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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




During the reaction I noticed that the hydrogen peroxide solution and the fizzing sound was
produced as well as bubbles showing a physical manifestation of gas produced my research showed
me that this gas was oxygen because of the formula;

Hydrogen peroxide + catalyse…

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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




Having an unbiased third party supervising and observing my test would ensure that the test was
safe, fair and reliable.

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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




Reliability of evidence.

My test is both reliable and accurate;

I repeated my test three times keeping my variables the same, the conditions are the same as
doing the tests in the same place. I worked alongside two others which made certain that more…

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JOAN NSIMBI ADDITIONAL SCIENCE COURSE WORK




catalyse but the results are very similar. For the 3% concentration of hydrogen peroxide the results
turn out to be similar to the first concentration. The results have a large gap for the lamb's liver to the
cow's liver. 1st to 3rd results were…

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