Larger Area For The Hydrogen Peroxide example essay topic
570 words
Aim To investigate what affect the surface area of potato (raw) has on the production of oxygen. Introduction Plant cells in potato have an enzyme called catalase which turns bleach (H 2 O 2) hydrogen peroxide into O 2 and H 2 O. Catalase is the fastest working enzyme and is found in many living things, it speeds up the breakdown of hydrogen peroxide, and the bubbles released are O 2. The reaction taking place is 2 H 2 O 2 = 2 H 2 O + O 2. Prediction I predict that the higher the surface, the more oxygen given off per unit time. This is because there is a larger amount of potato in contact with the hydrogen peroxide; this means there is a larger area for the hydrogen peroxide to crash into the enzyme molecules active site. This in turn means more oxygen will be given off.
Apparatus The Apparatus needed to conduct this experiment is... o A Boiling Tube o A Delivery Tube (With Rubber Bung) o Potato o Measuring Cylinder o Clamp and Stand o Trough o Water o Stopwatch o Hydrogen Peroxide Method Firstly we gathered all the apparatus listed above and laid it out as shown in the diagram. Then we cut out a cube of potato weighing 3 g, and then we put it into 50 ml of Hydrogen Peroxide in a boiling tube. Straight away the bung was replaced and we made sure the end of the delivery tube was under the measuring cylinder. We then started the stopwatch after connecting the apparatus and recorded how many ml of oxygen was displaced every 5 seconds. After recording the results, the next thing to do is repeat the experiment, except this time weigh out a 3 g cube of potato and then cut it into equal halves. Repeat again cutting a 3 g piece of potato into 4, 8, 16 and finally 32.
We do this to increase the surface area of potato exposed to hydrogen peroxide. Variables The only thing that will be varied in this experiment is the surface area of the potato used; this is because we are testing to see if the surface area of potato has an effect on the production of oxygen. Everything else in our experiment will remain the same. The concentration and volume of Hydrogen Peroxide must remain the same as if these were changed there would be more H 2 O 2 atoms colliding with the potato, increasing the O 2 production.
Also the temperature under which the experiment is conducted must be kept the same as the increase in temperature would give the H 2 O 2 atoms more energy meaning they collide more often. The mass of potato used must also remain the same as if the amount of potato is increased there will be more oxygen released as there is a larger surface area. Safety The person conducting this experiment should wear goggles at all times and stand up for the experiment. This is because the hydrogen peroxide is corrosive and irritant, so if you are wearing goggles it prevents any damage or irritation to the eyes.
Also if the person is standing up then if the peroxide is spilled it wont go on their legs, but on the floor.
Things every student should keep in mind
- Free example essays found anywhere online are available to anyone, which makes them used, re-used, paraphrased, and abused millions of times.
- Watch out, some are poorly written!
- We strongly discourage you to submit free essays or any of their parts for credit at your school -- they are easily detected by PLAGIARISM CHECKERS.
- Get a brand-new, 100% original paper that will be written especially for you following YOUR EXACT instructions.
100% money back, no questions asked if you paper is plagiarized (this won't happen anyway).
We use a simple but effective principle: one satisfied customer will come back for more, but one who was cheated and misled will tell 10 others too.
Our clients are treated with the highest level of respect that a legitimate student deserves. You, as a customer, will feel this attitude starting from your first contact with our essay service and all the way through.
A significant percentage of cheap essay writing services have also been the source of complaints from students for selling cut and pasted work off the net -- this is a world away from the personalized essay service that EssayPride offers. All our guarantees are always kept -- we are nothing without quality, affordable prices, and the high degree of customer satisfaction!
What our customers say
Piotr S.
Toronto, Canada
I am an ESL student and I am only learning how to write good papers in English. Thanks to EssayPride I am mastering this skill much faster. They help me because they always respond any questions and explain me things I do not understand. They also strictly follow the deadlines and I am never late with my assignments. Thank you very much, guys, your hard work is appreciated. I will surely be ordering more.
Lindsay M.
Winston Salem, NC
Oh my Gosh! My life has become sooo much easier after I've come across this website. I am a working student, so sometimes I am too overwhelmed with so many things and I really need a hand with my papers. I am glad I have found a company I can trust. I have confidence in these guys, because they proved to be good quite a few times.
Kirk N.
Austin, TX
I never leave reviews for products or services because I am quite particular and picky. Surprisingly enough, EssayPride has managed to satisfy all of my requirements, even though I asked for several alterations to the paper they've sent initially. My assignments are quite complicated and it is essential to possess a certain level of knowledge in order to write a decent paper. These guys have managed, so I give them four stars.
Emma Ch.
Birmingham, UK
Customer service is very responsive to your queries, they answer any question within an hour. Even if you have a problem with an order, you can contact them and they will fix it promptly. The quality of writing is very good, writer knows what he is talking about. I had a very positive experience using this website, I will be a returning customer.
Travis J.
Perth, Australia
I used this website more than once and every time my experience turned out to be extremely positive. I think their price-quality ratio is very good, because I couldn't find anyone writing better than these guys, who would work for this money. Thank you!
Myung O.
Seoul, South Korea
I am a Korean student studying in the US. I would like to thank essaypride staff, especially writer Jeff P., for helping me out so much. My grades are good with all your help and I keep calm about the results of my year.
Boyi Zh.
St. Louis, MO
As probably any student, I was quite hesitant about asking somebody else to do my assignments at first. However, after EssayPride has sent me my first paper and I've read it, I understood that I could actually learn a lot from them. The research they've done was impressive and I understood the topic even better than after going to class and reading my textbook. I am not using this website to "cheat", I am using it as a tutoring service, they help me to understand the material better.
