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Decomposing Hydrogen Peroxide - Introduction The purpose of this experiment is to gain an understanding of factors which influence the rates of reactions. Several experiments will be conducted using various combinations of concentrations of the reactant (hydrogen peroxide) and a catalyst (potassium iodide), as well as one pairing in which a change in temperature is the only variable. Data collected will be used to determine the rate law, rate constant, and activation energy for each of the reactions Hydrogen peroxide (H_2 O_2) naturally decomposes into water (H_2 O) and oxygen gas (O_(2 )) according to the following balanced equation....   [tags: Chemistry]
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1958 words
(5.6 pages)
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The Effect Of Catalase On Hydrogen Peroxide - The Effect Of Catalase On Hydrogen Peroxide Planning Catalase is an enzyme found in the blood and in most living cells its job is to speed up the decomposition of hydrogen peroxide into water and oxygen. 2H2O2 + Catalase ¾¾¾¾¾¾¾® 2H2O + O2 The chemical compound hydrogen peroxide (H2O2) is a viscous liquid that has strong oxidizing properties and is also used as a powerful bleaching agent that has found use as a disinfectant and (in strong concentrations) as an oxidizer....   [tags: Papers] 1249 words
(3.6 pages)
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An Investigation into the Decomposition of Hydrogen Peroxide - An Investigation into the Decomposition of Hydrogen Peroxide Aim: To investigate the rate of decomposition of H2O2 with different amounts of catalyst (MnO2). Hypothesis: When H2O2 and a catalyst are mixed together, the catalyst would break down H2O2 into water and oxygen. This will result in bubbles being produced. With the data of these oxygen bubbles, the rate at which H2O2 decomposed could be found out. 2H2O2 (l) à2H2O + O2 The controlwould be to maintain the same temperature (room temperature) and to use the same amount of hydrogen peroxide (10ml) in all the tubes....   [tags: Papers] 791 words
(2.3 pages)
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The Decomposition of Hydrogen Peroxide - The Decomposition of Hydrogen Peroxide What factors vary the decomposition of Hydrogen Peroxide when a fixed mass of catalyst is added to it. [IMAGE]Hydrogen Peroxide Water + Oxygen Manganese Oxide(catalyst) Equipment ========= Ø Burette Ø Clamp Ø A bowl of water Ø Test tube with delivery tube Plan- method ============ Ø Measure the catalyst and the H O . Ø Then pour the catalyst into a test tube along with the H O and attach the delivery tube....   [tags: Papers] 748 words
(2.1 pages)
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enzemes potato hydrogen peroxide - How the concentration of enzymes controls the breakdown of Hydrogen Peroxide. Aim- We are investigating the effect of changing the concentration of the enzyme catalase has on the rate of breaking down of Hydrogen Peroxide. Background Info- This experiment will involve some soft potato. Potato has a very high enzyme count, that¡¦s why we use it in this experiment. This enzyme is called catalase. It is used in our body to break down food and other things that we might digest. A catalase speeds up the rate of reactions....   [tags: essays research papers] 1676 words
(4.8 pages)
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Decomposition of Hydrogen Peroxide - Decomposition of Hydrogen Peroxide Aim: My aim in this experiment is to investigate the effect of changing the concentration of the substance (Hydrogen Peroxide) in an enzyme controlled reaction. Prediction: I predict that the higher the amount of Hydrogen Peroxide I use then the faster the displacement reaction will be. Therefore, the less substrate I use then the slower the displacement reaction will be. Hypothesis: I performed a preliminary experiment to distinguish the amount of yeast I will use for the actual experiment....   [tags: Papers] 737 words
(2.1 pages)
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Hydrogen Peroxide - (H2O2), a colourless liquid usually produced as aqueous solutions of various strengths, used principally for bleaching cotton and other textiles and wood pulp, in the manufacture of other chemicals, as a rocket propellant, and for cosmetic and medicinal purposes. Solutions containing more than about 8 percent hydrogen peroxide are corrosive to the skin. First recognized as a chemical compound in 1818, hydrogen peroxide is the simplest member of the class of s. Of the several processes of manufacture, the principal ones involve reactions of oxygen from the air with certain organic compounds, especially anthraquinone or isopropyl alcohol....   [tags: essays research papers] 645 words
(1.8 pages)
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Hydrogen Peroxide Investigation - Hydrogen Peroxide Investigation When hydrogen peroxide is added to a piece of fresh potato, bubbles of gas are seen to form. When a bigger piece of potato is used, a larger number of bubbles is produced. A possible explanation for this observation could be that oxygen is produced when hydrogen peroxide is broken down by the enzyme catalase. A large piece of potato will contain a higher amount of catalase than a smaller piece and therefore produces a greater volume of oxygen....   [tags: Papers] 621 words
(1.8 pages)
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The Effect of a Catalase on the Breakdown of Hydrogen Peroxide - The Effect of a Catalase on the Breakdown of Hydrogen Peroxide Aim To follow the progress of a catalysed reaction by measuring the volume of gas produced as the reaction proceeds. Using the initial rates of a series of experiments I will be able to find the orders of the reaction with respect to enzyme and substrate. Also to find out if concentration has an effect on the reaction when an enzyme is used to accelerate the breakdown of hydrogen peroxide. Introduction / Background Information....   [tags: Papers] 1121 words
(3.2 pages)
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Activity of the Enzyme Catalase with Hydrogen Peroxide - Activity of the Enzyme Catalase with Hydrogen Peroxide Background Information: An enzyme (Catalase) is a biological catalyst. It can modify the rate of reaction without being changed itself. Enzymes are also globular proteins that have a three-dimensional specific shape; among with a pocket known as the active site, this has a precise shape to link with the exact substrate. Every enzyme are capable of converting one kind of substrate molecule into one kind of product molecule, which forms the enzyme-substrate complex....   [tags: Papers] 2153 words
(6.2 pages)
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Investigating the Effect of the Enzyme Catalyse On Hydrogen Peroxide - Investigating the Effect of the Enzyme Catalyse On Hydrogen Peroxide Introduction The aim of this experiment is to determine the effects of varying enzyme (catalyse) on Hydrogen Peroxide. Hydrogen Peroxide + Catalyse à Water + Oxygen 2H2O2 à H2O + O2 + Heat Apparatus & Diagram [IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE] Bung Potato Hydrogen Peroxide Water Collected Oxygen Delivery Tube Measuring Cylinder [IMAGE] Using the Equipment Safely It is important that we use the apparatus carefully, as safety will be an issue throughout the whole experiment....   [tags: Papers] 1005 words
(2.9 pages)
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What Affects the Rate of Breakdown of Hydrogen Peroxide by Enzymes - What Affects the Rate of Breakdown of Hydrogen Peroxide by Enzymes Aim === The aim of this experiment is to find out how temperature and concentration affect the breakdown of hydrogen peroxide by an enzyme (yeast). I hope to achieve reliable results that will confirm my predictions. Prediction ========== I predict that if the concentration is high in the yeast then the speed of oxygen produced in the reaction with hydrogen peroxide will also be high. This is because the amount of yeast that can react with the hydrogen peroxide can get no higher and will have the maximum affect on the reaction....   [tags: Papers] 866 words
(2.5 pages)
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Analysis of the Decomposition Rate of Hydrogen Peroxide With Catalase As a Catalyst - Analysis of the Decomposition Rate of Hydrogen Peroxide With Catalase As a Catalyst Aim: To measure the rate of decomposition of Hydrogen Peroxide with Catalase from a Yeast solution using PH as a variable. Hypothesis: The enzyme Catalase speeds up the Hydrogen Peroxide decomposition as its active sites match the shape of the Hydrogen Peroxide molecule. This process will only work at certain PH levels as the Enzyme sites may become disfigured at extremes. Logic suggests that Catalase will work well at PH7 Neutral, but due to the nature of Catalase removing Hydrogen Peroxide from human body cells a slightly acidic solution might work just as well....   [tags: Papers] 654 words
(1.9 pages)
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Investigating Factors Affecting the Rate of the Decomposition of Hydrogen Peroxide - Investigating Factors Affecting the Rate of the Decomposition of Hydrogen Peroxide Aim: To see how the rate of the decomposition of Hydrogen Peroxide is affected by the concentration of Hydrogen Peroxide. [IMAGE]Prediction: I know that Hydrogen Peroxide is unstable and gradually breaks down into water and oxygen over time. The equation for this reaction is 2H2O2*(aq) 2H2O (l) + O2 (g). I think that the higher the concentration, the faster the rate of reaction will be. I think this because the higher the concentration, the more atoms there are, then there are more chickens and therefore there are more collisions as a direct result of the concentration....   [tags: Papers] 1452 words
(4.1 pages)
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Investigating the Speed of Reaction Between Hydrogen Peroxide and a Potato - Investigating the Speed of Reaction Between Hydrogen Peroxide and a Potato To find what will increase the speed of the reaction between Hydrogen peroxide and a potato, with the enzyme catalase, to produce oxygen and water. Variables: * Changing the surface area of the potato * Changing the heat in which the reaction takes place in * Changing the concentration of the acid * Changing the size of the potato chunks * Changing the amount of potato * Changing the PH level I will be testing in my preliminary experiment these variables: Changing the surface area of the potato and Changing the heat the reaction takes place in....   [tags: Papers] 2032 words
(5.8 pages)
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Investigating the Effects Catalyse Has on Hydrogen Peroxide Solution - Investigating the Effects Catalyse Has on Hydrogen Peroxide Solution Aim: I am going to investigate the effects which catalyse has on a hydrogen peroxide solution Preliminary work We would use potato to do the experiment because we had done a previous experiment when we put a piece of potato and liver into a hydrogen peroxide solution and the rate of reaction for the liver was too fast to measure and time. But the potato had a slower reaction which will be easier to time and we can measure the size of the froth using a ruler....   [tags: Papers] 654 words
(1.9 pages)
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Rate of Reaction Between Hydrogen Peroxide and the Potato - Rate of Reaction Between Hydrogen Peroxide and the Potato Prediction The predictions for the rate of reaction, between the Hydrogen Peroxide and the potato. For this experiment there are some vital factors referred to the rate of reaction between the hydrogen peroxide and potato slice. For this experiment I will predict what the affect of the concentration, particle size and temperature would be. The Concentration:Would a low concentration be better for the experiment or a high concentration....   [tags: Papers] 879 words
(2.5 pages)
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Comparing the Reaction Rates Between Potato and Hydrogen Peroxide Against Liver and Hydrogen Peroxide Through Loss in Mass - Comparing the Reaction Rates Between Potato and Hydrogen Peroxide Against Liver and Hydrogen Peroxide Through Loss in Mass Background information: Catalase is an enzyme that is found in all cells. This means that it is an intracellular enzyme. And enzyme is a biological catalyst. A catalyst is some thing that speeds up a reaction without being changed itself. Because of this enzymes and catalysts can be used again and again. Enzymes are protein chains that have a primary, secondary and tertiary structure....   [tags: Papers] 1344 words
(3.8 pages)
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The Concentration of Hydrogen Peroxide and Speed of The Rate at Which It is Broken Down by Catalase - The Concentration of Hydrogen Peroxide and Speed of The Rate at Which It is Broken Down by Catalase AIM To find out whether the concentration of Hydrogen Peroxide affects the rate of decomposition of hydrogen peroxide when broken down by catalase. SCIENTIFIC KNOWLEDGE Hydrogen peroxide is a liquid bi-product of many chemical reactions in living things. It is toxic, so has to be broken down by the enzyme catalase which is also found in most living things. E.g. [IMAGE]Hydrogen peroxide catalase water + oxygen 2H2O2 (aq) 2H2 O + O2 [IMAGE] The enzyme catalase (peroxidase) was the first enzyme discovered and is one of the fastest enzymes, its turnover ra...   [tags: Papers] 2648 words
(7.6 pages)
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The Effect of Substrate Concentration on the Rate of Reaction Between Yeast Catalase and Hydrogen Peroxide - The Effect of Substrate Concentration on the Rate of Reaction Between Yeast Catalase and Hydrogen Peroxide Useful info The Enzyme Catalase is a protein molecule which is found in living cells. It is used to speed up reactions in the cells. It is a very specific enzyme and just performs one particular reaction. Catalase is an enzyme found in cells in potatoes and liver and is used for removing Hydrogen Peroxide from the cells. Hydrogen Peroxide is the poison produced during metabolism....   [tags: Papers] 1242 words
(3.5 pages)
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Investigating the Amount of Oxygen Given Off When Catalase Reacts with Hydrogen Peroxide - Investigating the Amount of Oxygen Given Off When Catalase Reacts with Hydrogen Peroxide My aim for this investigation is to measure the amount of oxygen given off when we react catalase (enzyme) with hydrogen peroxide (substrate), this means that I aim to investigate the effect of hydrogen on the activity of catalase. Background Information Enzymes such as Catalase are protein molecules that are found in living cells. They are used to speed up specific reaction in the cell. The enzymes are all very specific as each enzyme performs one particular reaction....   [tags: Papers] 1230 words
(3.5 pages)
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Investigation of Factors Affecting the Rate of Breakdown of Hydrogen Peroxide by Catalase - Investigation of Factors Affecting the Rate of Breakdown of Hydrogen Peroxide by Catalase Certain reactions in the cell produce hydrogen peroxide, which is poisonous. The enzyme catalase is able to render it harmless producing water and oxygen. Prediction I predict that as the concentration of hydrogen peroxide increases, so will the amount of oxygen released in a given time. This is because in an increased concentration of hydrogen peroxide there are molecules to come into contact with the catalase and so the reaction happens faster....   [tags: Papers] 630 words
(1.8 pages)
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Investigate the Effect of pH on Immobilised Yeast Cells on the Breakdown of Hydrogen Peroxide - Investigate the Effect of pH on Immobilised Yeast Cells on the Breakdown of Hydrogen Peroxide Safety: ======= * Extreme alkaline and acids are used so must wear gloves, goggles and apron. * Be very careful not to make contact with any of the chemicals, as they will be irritable and some corrosive to the skin and eyes. * There must be no running and any other normal laboratory rules should be followed as usual. * Hydrogen peroxide is corrosive and so should not be touched. * A lab technician should immediately wash up spillages....   [tags: GCSE Chemistry Coursework Investigation] 1534 words
(4.4 pages)
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Temperature's Effect on the Production of Oxygen From Yeast and Hydrogen Peroxide - Temperature's Effect on the Production of Oxygen From Yeast and Hydrogen Peroxide Planning Aim --- My aim is to discover how temperature effects the production of oxygen from yeast and hydrogen peroxide. I will mix yeast with hydrogen peroxide and use an upturned measuring cylinder to measure how much oxygen is produced. To find out how much hydrogen peroxide and yeast I will use, I will carry out pre-tests....   [tags: Papers] 2104 words
(6 pages)
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Investigating the Rates of Reaction Between Hydrogen Peroxide and Manganese Dioxide - Investigating the Rates of Reaction Between Hydrogen Peroxide and Manganese Dioxide Aim: My aim for this investigation is to find out how concentration affects the rate of reaction between hydrogen peroxide and manganese dioxide. Equipment List: Syringe filled with water (gas collector); Conical flask; Manganese dioxide powder; Hydrogen Peroxide liquid; Measuring cylinder (5 ml); Timer; Clamp and Stand; Cork; Glass (delivery) tube; Water Basin with water; Electronic Scales....   [tags: Papers] 1131 words
(3.2 pages)
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How Hydrogen Peroxide Affects the Rate of Reaction of the Enzyme Catalase - How Hydrogen Peroxide Affects the Rate of Reaction of the Enzyme Catalase Introduction: Catalase, like all enzymes, is made up of protein molecules. It can be found in the cytoplasm of living tissue. It speeds up the decomposition of Hydrogen Peroxide, a metabolic waste product, into water and oxygen that can safely be removed from the cell. The type of reaction involved is known as a catabolic reaction (i.e. substrate broken down.)This is simply because the substrate enters the active site and is broken down, and leaves as 2 separate products, in this case water and oxygen: 2H2O2> 2H20 + O2 [IMAGE] Like all enzymes, the rate at which the enzyme works is af...   [tags: Papers] 3805 words
(10.9 pages)
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The Effect of the Enzyme Catalase on Hydrogen Peroxide When the Temperature is Changed - The Effect of the Enzyme Catalase on Hydrogen Peroxide When the Temperature is Changed Plan: Chemical reactions take place in all living cells. All of these reactions are enzyme-driven. Some of these reactions produce by-products. One by-product is Hydrogen Peroxide (H2O2). It is a poison and must be removed from the cells. The cell produces an enzyme called Catalase to break down the Hydrogen Peroxide into water and oxygen. This experiment will investigate the effect of temperature on the rate of the breaking down of Hydrogen Peroxide by Catalase....   [tags: Papers] 893 words
(2.6 pages)
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The Rate Law for Chemical Reaction Among Hydrogen Peroxide, Iodide, and Acid - The Rate Law for Chemical Reaction Among Hydrogen Peroxide, Iodide, and Acid To determine the rate law for a chemical reaction among hydrogen peroxide, iodide and acid, specifically by observing how changing each of the concentrations Experiment 3 Chemical Kinetics Objectives 1. To determine the rate law for a chemical reaction among hydrogen peroxide, iodide and acid, specifically by observing how changing each of the concentrations of H2O2, and H+ affects the rate of reaction. 2. To observe the effects of temperature and catalyst on the rate of reaction....   [tags: Rate Law Chemical Reactions Science Essays] 3112 words
(8.9 pages)
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The Effect of Changing the Concentration of the Enzyme Catalyst on the Rate of Reaction on Hydrogen Peroxide - The Effect of Changing the Concentration of the Enzyme Catalyst on the Rate of Reaction on Hydrogen Peroxide Planning -------- Hydrogen Peroxide Water + Oxygen 2H2O2 2H2O + O2 Introduction - Background Information ------------------------------------- To help me understand what a chemical reaction is or involves I did some research. A chemical reaction is a process by which atoms or groups of atoms are redistributed, resulting in a change in the molecular composition of substances....   [tags: Papers] 1965 words
(5.6 pages)
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Lab Report on Measuring the Rate of Conversion of Hydrogen Peroxide using Enzyme Catalysis - Lab Report on Measuring the Rate of Conversion of Hydrogen Peroxide using Enzyme Catalysis In essence, the main objective was to use chemical titration to measure and then calculate the rate of conversion of hydrogen peroxide (H2O2) to water and oxygen by using the enzyme catalase. Other purposes of the lab were; to measure the effects of changes of temperature, pH, enzymes concentration, and substrate concentration on rates of an enzyme. The lab was also an opportunity to see a catalyzed reaction in a controlled experiment....   [tags: Papers] 678 words
(1.9 pages)
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Investigating the Relationship Between Surface Area and the Rate of Oxygen Produced When Potato is Placed in Hydrogen Peroxide - Investigating the Relationship Between Surface Area and the Rate of Oxygen Produced When Potato is Placed in Hydrogen Peroxide Investigation I am trying to find out the relationship between surface area and the rate of oxygen produced when potato is placed in hydrogen peroxide. Introduction I will find out that if the surface area of a potato cylinder changes, will the amount of oxygen produced by the enzyme catalase be affected. Prediction I predict that as the surface area of the potato cylinder increases, the quicker the reaction between the hydrogen peroxide and potato cylinders and therefore more oxygen will be produced....   [tags: Papers] 1063 words
(3 pages)
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Lab Report Using a Chemical Titration to Measure Rate of Conversion of Hydrogen Peroxide to Water and Oxygen - Lab Report Using a Chemical Titration to Measure Rate of Conversion of Hydrogen Peroxide to Water and Oxygen Overview: In this laboratory you will use a chemical titration to measure and then calculate the rate of conversion of hydrogen peroxide (HO) to water and oxygen using the enzyme catalase. Objectives: Before doing this exercise, you should understand: Ø the general functions and activities of enzymes Ø the relationship between the structure and function of enzymes Ø the concept of initial reaction rates of enzymes Ø how the concept of free energy relates to enzyme activity Ø that changes in temperature, pH, enzyme concentration, and substrate concentration can affect the initial re...   [tags: Papers] 1829 words
(5.2 pages)
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The Effect of Surface Area on the Rate of Reaction Between Catalase from a Potato and Hydrogen Peroxide - The Effect of Surface Area on the Rate of Reaction Between Catalase from a Potato and Hydrogen Peroxide Aim To find out the relationship between the surface area of a potato chip and the rate of reaction when hydrogen peroxide is put in with it. Variables As I do this experiment the thing I am going to be changing is the surface area of the potato chip, first I will put it in the beaker as a whole (3cm chip) then I will start cutting it into smaller pieces and repeating the experiment....   [tags: Papers] 734 words
(2.1 pages)
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Oxides of Hydrogen - Oxides of Hydrogen Introduction: Hydrogen atoms can react with oxygen atoms forming different compounds. There are mainly two types, one is water and the other is hydrogen peroxide. Structure: A water molecule is made up of two hydrogen atoms and one oxygen atom joining together by covalent bonds. The shape of it is bent and its bond angle is of 105°. The structure is shown below. [IMAGE] A hydrogen peroxide molecule consists of two hydrogen atoms and two oxygen atoms joined together by covalent bonds....   [tags: Hydrogen Oxides] 733 words
(2.1 pages)
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Effect of Temperature on an Enzyme in Hydgrogen Peroxide - Effect of Temperature on an Enzyme in Hydgrogen Peroxide Introduction. The aim of this investigation is to find out how temperature affects the speed at which the enzyme,Catalase,works best in Hydrogen Peroxide.I hope to achieve reliable results that will confirm my predictions. I predict that:- · By increasing the temperature of the Hydrogen Peroxide,the Catalase will react faster. This is because the particles have more energy so they will move and react at a faster rate....   [tags: Papers] 1424 words
(4.1 pages)
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Hydrogen: The Fuel of Tomorrow - People today are always complaining about something, and one popular topic is gasoline prices. The older generations reminisce about a time when gasoline could be bought for a quarter a gallon; a big difference compared to the three to four dollars being paid today. It does not help matters that America depends so heavily on foreign countries for our gasoline supply.1 And with the conflict in the Middle East, gasoline prices are as uncertain as ever; the prices rise and fall at the drop of a hat now-a-days....   [tags: Alternative Energy]
:: 7 Works Cited
1535 words
(4.4 pages)
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The History and Production of Hydrogen - Hydrogen gas was first identified as an element in 1766, by British scientist Henry Cavendish, in an experiment wherein he separated hydrogen gas by reacting zinc metal plates with hydrochloric acid. Cavendish found that when he applied a spark to the resulting hydrogen gas, it yielded water. It wasn’t until some years later that French chemist Antoine Lavoisier gave hydrogen its modern name. The word hydrogen is derived from the Greek words ‘hydro’ and ‘genes’, which translate as ‘born of water.’ In 1800, two English scientists, William Nicholson and Sir Anthony Carlisle, discovered electrolysis....   [tags: electric, gas, energy] 1175 words
(3.4 pages)
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Hydrogen - Hydrogen Hydrogen is a tasteless, odorless, colorless gas. Hydrogen is found in group 1 and period 1 on the periodic table. Hydrogen is classified as a nonmetal on the periodic table. The symbol for hydrogen is represented by an H, its atomic number is 1, and its atomic weight is 1.0079. The hydrogen atom consists of one proton, which has a positive charge, and one electron, which has a negative charge. The term hydrogen comes from two Greek words meaning water-former. Henry Cavendish, an English scientist, discovered it in 1766....   [tags: essays research papers] 557 words
(1.6 pages)
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The Peroxides Investigation - The Peroxides Investigation Introduction Peroxides is the incorrect name for this enzyme the correct term is catalase. It catalyses the breakdown of hydrogen peroxide. It is present in all body cells especially LIVER cells which are very active. catalase [IMAGE]Hydrogen peroxide water + oxygen catalase [IMAGE]2h2O2 2h2O+O2 Enzymes are biological catalysts and a catalyst is a substance that speeds up the rate of reaction during the reaction it gets changed e.g....   [tags: Papers] 797 words
(2.3 pages)
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Storing the Impossible: Hydrogen - Storing the Impossible: Hydrogen ("Thinkquest internet challenge," 2000) The earth’s supply of gasoline is slowly diminishing along with the cleanliness. In a desperate attempt to save precious gas, scientists have been attempting to find new ways to store and use energy. One way that scientists are consistently trying out is storing hydrogen. According to Demirbas(2001), “Because hydrogen can be easily generated from renewable energy sources and water, it has great potential as an energy source” (p....   [tags: Hydrogen]
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1276 words
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How Hydrogen Will Save the World - Hundreds of square miles of habitat for penguins, polar bears, and sea lions disappear every year at a faster rate putting some species on the endangered list. So why is this happing. Most contemporary scientists blame global warming and a startling 97% of American scientists blame humans for the causes of accelerated global warming (Plait 1). So should it be people’s natural responsibility and moral duty to act. Besides, animals are not the only ones that are going to be negatively affected. Global warming causes increased amounts of water to collect in the atmosphere resulting in larger thunderstorms, snowfall, and natural disasters resulting in greater human devastation....   [tags: Hydrogen Fuel]
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1405 words
(4 pages)
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The Use of Hydrogen Fuel Cells - As fossil fuels continue to be targeted for removal in the use as a source of power many talk about the use of hydrogen fuel cells as a replacement. The article discus this from two view points, Joan Ogden, a Professor of Environmental Science and Policy at the University of California, and Daniel Sperling , Professor of Civil and Environmental Engineering and Environmental Science and Policy, and Director of the Institute of Transportation Studies at the University of California, describe how many countries have begun projects in regards to hydrogen fuel cells and that car companies have announced commercialized versions in the near future....   [tags: Hydrogen Fuel Cells]
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1024 words
(2.9 pages)
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Hydrogen: The Best Alternative Energy Source - Since the human were created, they have always been depending on an external energy source. Before the use of fossil fuel was discovered, people used the sun as their main external energy source. The sun provides heat, light, and photosynthesis for food that the humans and animals need to make their work energy. And it also affects wind and water motion that the humans also use to make power to do heavy work. When the use of fossil fuels was discovered, it enabled the industrial revolution to begin in the early 19th century....   [tags: Hydrogen, An Energy Resource]
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2624 words
(7.5 pages)
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Development Of The Hydrogen Bomb - Development of the Hydrogen Bomb In the world there is little thing called power. Many countries want to have great power, few get it. Powers gave the Soviet Union and the U.S. the ability to dominate in wars. In the 1950’s during the Cold War these two countries had a race to se who could create the most powerful weapon the world has ever seen, the Hydrogen Bomb. Edward Teller, an atomic physicist, and Stanislaw Marcin Ulam, a mathematician, "who together developed the Teller-Ulam design in 1951" for the Hydrogen Bomb (Teller-Ulam Design)....   [tags: Hydrogen Bomb] 978 words
(2.8 pages)
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The Effect Of Substrate Concentration On The Activity Of The Enzyme Catalase - The Effect Of Substrate Concentration On The Activity Of The Enzyme Catalase A Level Biology Project Aims This is an experiment to examine how the concentration of the substrate hydrogen peroxide affects the rate of reaction of the enzyme catalase. Introduction This is a real A-level school project and as such is intended for educational or research purposes only. Extracts of this project must not be included in any projects that you submit for marking. Doing this could lead to being disqualified from all the subjects that you are taking....   [tags: biology experiment, chemistry experiment] 2003 words
(5.7 pages)
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Hydrogen Power as a Fuel Source - Hydrogen Power as a Fuel Source It is no secret that the Gulf war was fought for superiority of the vast oil reserves in the Arab regions. This point to the fact that the superpowers are experiencing a severe shortage of fuel for its un-satiated energy needs. While the advanced nations in the world are the biggest consumers of fuel, their fuel production capacities are very limited or almost non-existent. Scientists predict that the world's oil reserves will not last for long and we need to find out alternative forms of fuel for our ever growing fuel needs....   [tags: Alternative Fuel Oil Hydrogen Essays] 999 words
(2.9 pages)
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The Benefits of Hydrogen Cars - The Advantages of Hydrogen Cars As you know, gas prices are going up. Nobody likes paying more money for gas and yet nobody is willing to do anything about it. Now that we are at war with the Middle East (the main gasoline providers) the gas prices are going to keep going up. Some people (like foreign ambassadors) say that trade with the Middle East is good for there economy, but I for one don’t like being dependant on foreign oil. That is where hydrogen fuel cells come into the picture. Rather than depending on a foreign countries oil, to provide fuel, businesses today should look to hydrogen as an alternative fuel source....   [tags: Hydrogen Cars Environmental Automobiles Essays] 694 words
(2 pages)
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Hydrogen Fuel Cells - As time goes on, technological advances require more efficient sources of power. At the forefront of research for these power sources are hydrogen fuel cells. This power source takes in the most abundant element in the universe, Hydrogen, and yields immense power without combustion or pollution. The three aspects of this scientific breakthrough are the fuel cells, hydrogen production, and hydrogen storage. Fuel cells are the devices with which Hydrogen is made into electricity. These use a technology much similar to that of something we are very familiar with: the battery....   [tags: Informational Alternative Power Source Hydrogen] 1024 words
(2.9 pages)
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Jeremy Rifkin's Hydrogen: Empowering the People - Jeremy Rifkin's Hydrogen: Empowering the People Fossil fuels empower the world that we live in. Everything from cars, heating for homes, and electricity use fossil fuels. However, fossil fuels are not a renewable source, and the crisis that we face as human beings is that it is running out. An alternative to fossil fuels is hydrogen fuel. The replacement of fossil fuels with hydrogen fuels has been debated for a long time....   [tags: Rifkin Jeremy Renewable Energy Hydrogen Fossil Fue] 1059 words
(3 pages)
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The Harcourt Essen Experiment - The Harcourt Essen Experiment The aim of this investigation is to: 1) find the rate equation for the reaction between hydrogen peroxide, potassium iodide and sulphuric acid by using the iodine stop clock method and plotting graphs of 1/time against concentration for each variable. Then to find the activation energy by carrying out the experiment at different temperatures using constant amounts of each reactant and then by plotting a graph of in 1/t against I/T, 3) to deduce as much information about the mechanism as possible from the rate equation....   [tags: Chemistry, Science, Experiment] 1470 words
(4.2 pages)
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Temperature and its Effect in Enzyme Catalyzed Reactions - ... The first catalase ever to be noted as a substance was discovered in 1818 by Louis Jacques Thénard. He is the man who discovered hydrogen peroxide. He suggested that its breakdown was caused by a substance. In 1900, Oscar Loew was the first person to give it the name ‘catalase’, and also noticed that its presence was found in many plants and animals. Also, in 1937 the catalase enzyme from beef liver was crystallized by James B. Sumner and its molecular weight was worked out in 1938. (www.Chemistry explained.com; Chemistry Encyclopedia) Usually enzymes have three dimensional structure and always end with the letters 'ase'....   [tags: Cells, Chemistry] 557 words
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Effect of Substrate Concentration on Catalase - Effect of Substrate Concentration on Catalase Aims This is an experiment to examine how the concentration of the substrate Hydrogen Peroxide (H2O2) affects the rate of reaction of the enzyme Catalase. Background Information Enzymes such as Catalase are protein molecules, which are found in living cells. They are used to speed up specific reaction within the cell. They are all very specific as each enzyme just performs one particular reaction. Catalase is an enzyme found in food such as potato and liver....   [tags: Papers] 1026 words
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Investigating Factors that Affect the Rate of Reaction - Investigating Factors that Affect the Rate of Reaction 1.0 Introduction The rate of a reaction is a measure of how quickly reactants are used up or products are made. There are many factors which will affect the rate of reaction between 2 reactants. These are: surface area of the potato chip, temperature of the liquid, catalyst, light, physical stirring and concentration of liquid. In this experiment I shall look at the effect of concentration on the rate of reaction between hydrogen peroxide (H2O2) and a catalyst- catalase, which is found in potato chips....   [tags: Papers] 1263 words
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Hydrogen: Is it worth it? - ... Gasoline is a fossil fuel, meaning that once we use all of what we have, there will be no more. Not only that, but when we use gasoline in internal combustion engines, it releases carbon dioxide into the atmosphere. Carbon Dioxide in the atmosphere wouldn’t really be a big issue, we have trees, and trees breathe in the harmful gas and release breathable oxygen. The only problem is that lately we have been cutting down many of our trees and at the same time producing carbon dioxide at rates the trees can’t keep up with....   [tags: alternative sources of fuel]
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Investigating Enzyme Activity - Investigating Enzyme Activity PLANNING AIM === The aim of this experiment is to see how changing the concentration of Hydrogen Peroxide (H2O2) affects the rate of reaction of the enzyme Catalase. The reaction I am looking at is the breakdown of Hydrogen Peroxide into water and oxygen by the enzyme Catalase. The equation for this reaction is: 2H2O2 à 2H2O + O2 FACTORS ------- In this experiment I could change the following factors: Concentration of the Hydrogen Peroxide or Catalase, the time, the temperature and the Ph of the solutions....   [tags: Papers] 932 words
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The Effect of pH on the Activity of Catalase - The Effect of pH on the Activity of Catalase Secondary resources: from my research I carried out, I have learnt that: Catalyse is an enzyme that is found in foods such as potato and liver. Catalyse speeds up the decomposition of hydrogen peroxide into water because the shape of the hydrogen peroxide molecule. This type of where a molecule is broken down into smaller pieces is called an anabolic reaction. This enzyme catalysis is the breakdown of hydrogen peroxide and it forms oxygen gas and water....   [tags: Papers] 2174 words
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Rate of Catalase Activity - Rate of Catalase Activity Background Information Enzymes such as catalyse are protein molecules, which are found in living cells. They are used to speed up specific reactions in the cells. They are all very specific as each enzyme just performs one particular reaction. Catalyse is an enzyme found in food such as potato and liver. It is used for removing Hydrogen Peroxide from the cells. Catalyse speeds up the decomposition of Hydrogen Peroxide into water and oxygen. It is able to speed up the decomposition of Hydrogen Peroxide because of the shape of the Hydrogen Peroxide molecule....   [tags: Papers] 710 words
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Factors Affecting the Rate of Enzyme activity - Enzymes are efficient proteins which play a part in cellular metabolic processes. Enzymes have the ability to improve the rate of reactions among living organisms. (Phillips, 2009) Although they work as a part of the reaction, they do not go through lasting alterations and therefore remain unchanged by the end of the reaction. They can only alter the rate of reaction. (Royal Society of Chemistry) Enzyme activity was first studied in a test tube in 1833 by Payen and Persoz. Temperature, pH, enzyme concentration, substrate concentration, as well as the presence of any inhibitors or activators are all factors which affect the rate at which enzymatic reactions occur....   [tags: science experiments, ] 1678 words
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The Effect of Different Concentrations of a Substrate On an Enzyme - The Effect of Different Concentrations of a Substrate On an Enzyme Introduction: Enzymes are biological catalysts. They are generally large proteins made up of several hundred amino acids. Enzymes catalyze thousands of chemical reactions that occur in living cells. Enzymes are highly specific so each one speeds up only one particular chemical reaction. Many kinds of enzymes are found in each cell but because they are used over and over there may be only a small amount of each enzyme present....   [tags: Papers] 691 words
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The Working of a Biological Catalyst: Catalase - ... Enzyme activity was not affected as the pH of water, which is 7, is similar to the pH the liver maintains. In tube 5 a boiled cube of liver was placed into hydrogen peroxide. Boiling liver made irreversible changes to the structure of catalase and it could no longer function properly, it become denatured. Boiling liver damaged the catalase enzyme and clearly decreased the amount of bubbles when it was exposed to hydrogen peroxide; no foam was created. In tube 2 manganese dioxide and a cube of liver was added to hydrogen peroxide....   [tags: enzyme, pH, broiling liver] 859 words
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Investigation of How the Concentration of Catalase Enzyme Affects the Rate of Reaction - Investigation of How the Concentration of Catalase Enzyme Affects the Rate of Reaction Aim: To find out how the concentration of Catalase Enzyme will affect the enzyme activity and the rate of reaction towards Hydrogen Peroxide. (H O ) Prediction: I predict that with the higher concentration of enzyme, the likelihood of it breaking down molecules will be greater because there will be more enzymes to work at the substrate and the chances of it colliding will be higher making the activity time quicker....   [tags: Papers] 1136 words
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The Hydrogen Economy - 1. Hydrogen Economy 1.1 Introduction Coal, oil and natural gas have been at the forefront of powering the world since the industrial revolution. Whether this power is used for new technology, transport links or energy the threat that fossil fuels has on the environment is colossal. Energy availability for the masses is the main dominant challenge in the 21st century and is driven by the world’s forever increasing population and the industrialization of developing countries (Crabtree, Dresselhaus, Buchanan, n.d.)....   [tags: coal, oil, natural gas, power]
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Investigating a Factor that Affects Enzyme Activity - Investigating a Factor that Affects Enzyme Activity Planning -------- Aim --- To investigate a factor which will affect the activity of catalase, whilst keeping all variables constant. Possible Independent Variables ------------------------------ Here are a number of possible independent variables that could be changed in the experiment: Independent variable Continuous/Discontinuous Easy to measure. Volume of substrate used Continuous Yes Type of enzyme Discontinuous Yes Overall mass of piece of meat Continuous No Type of substrate used Discontinuous Yes Temperature of substrate Continuous...   [tags: Papers] 1409 words
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Peroxides and their Effects on Plants - Peroxides such as peroxyacetyl nitrate (PAN) and H_2 O_2 are present in polluted air.Of the corresponding ozone concentrations, PAN may yield up to 5% -20% in centers of “photosmog”, for example, the Los Angeles region. The observation of the effects of PAN on plants first occurred in 1945 in the Los Angeles area as a silvery-bronze glazing on leaf crops like spinach (Spinaceaoleraceae) and lettuce (Lactuca sativa). PAN, a constituent of smog, the acidic, eye-irritating haze, fills the air periodically over certain industrial regions and large cities....   [tags: chemical pollutants]
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Chemistry Catalyst Investigation - Chemistry Catalyst Investigation Aim To devise and carry out an investigation into how the concentration of hydrogen peroxide in a solution with distilled water will affect the rate of the catalysed reaction between hydrogen peroxide solution and manganese oxide. I will be studying the chemical catalyst manganese and its reaction with different concentrations of hydrogen peroxide. The liquid hydrogen peroxide decomposes according to the equation: 2H202 (l) 2H20 (l) + 02 (g) So to measure the rates of reactions we will measure the amount of oxygen given off by the reaction....   [tags: Papers] 3891 words
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The Effect of pH on the Activity of Catalase - The Effect of pH on the Activity of Catalase Planning Experimental Work Secondary Resources Catalase is a type of enzyme found in different types of foods such as potatoes, apples and livers. It speeds up the disintegration of hydrogen peroxide into water because of the molecule of hydrogen peroxide (H2O2) but it remains unchanged at the end of the reaction. This is a type of reaction where a molecule is broken down into smaller pieces. It is called an anabolic reaction....   [tags: Papers] 2256 words
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Enzyme Activity in the Catalase - The purpose of this experiment was to see if there would be enzyme activity that is in catalase, which is found in potatoes. How my partner and me did the experiment was very simple, we put the filter paper filled with catalase concentration in to five sets of hydrogen peroxide. We found that the more concentration of hydrogen peroxide there was the faster it would take for the filter paper to reach the top, and the lower to no concentration level of hydrogen peroxide was the slower it would go to reach the top....   [tags: catalyst, potatoes, experiment] 1803 words
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Exploring the Properties and Functions of Enzymes - Exploring the Properties and Functions of Enzymes Introduction In this experiment I will attempt to investigate how the change in temperature effects the catalyse reaction and what the optimum temperature is. Key factors Key factor (variable) Reason for controlling How it is going to be controlled Temperature of hydrogen peroxide H202 I am going to control this variable because if the temperature of the hydrogen peroxide was higher or lower then the right temperature the test wouldn’t be fair and my results could be affected because a different temperature would r...   [tags: Papers] 3628 words
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How the Concentration of the Substrate Affects the Reaction in the Catalase Inside Potato Cells - How the Concentration of the Substrate Affects the Reaction in the Catalase Inside Potato Cells Introduction Enzymes are made of proteins and they speed up reactions, this means that they act as catalysts. Hydrogen peroxide is a byproduct of our cell's activities and is very toxic. The enzymes in our bodies break down the hydrogen peroxide at certain temperatures they work best at body temperature, which is approximately 37 degrees. At high temperatures, the cells begin to denature....   [tags: Papers] 1162 words
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The Benefits of a Hydrogen Based Economy - In the 21st century the world faces a dilemma of scarcity; a situation of limited resources to satisfy unlimited wants. A major concern in this regard is the measure of time we have left with our natural resources. Statistics show that there has been a significant increases in our population over the last 60 years. According to the United Nation’s department of Economics and Social Affairs, there was a 63.7% increase from 2.5 billion in 1950 to 6.9 billion in 2010 (UN). The area to be affected the most in a globally industrialised economy would therefore be the energy sector....   [tags: Chemistry, energy, sodium]
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The Advantages and Obstacles of Hydrogen as a Fuel - Introduction Considering current tendency of consumption of fuel in the automobile industry, it is assumed that humanity will exhaust the supply of the oil for transport supposedly in the period of the next 50 years. It is assumed by British Petroleum (2013) in their annual report that “world proved oil reserves at the end of 2012 reached 1668.9 billion barrels, sufficient to meet 52.9 years of global production”. As the only widely distributed automobile fuel type is petroleum, it will be problematic to travel from one place to another if the oil depletion occurs and no other fuel types will be introduced by that moment....   [tags: automobile, petroleum, combustion] 1241 words
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Hydrogen Vehicles and Their Delay in Production - Our Air is Our Future. Hydrogen. The latest craze these days is hybrid cars. People are looking for alternatives to their gas-guzzlers and are opting for more fuel-efficient vehicles. With the rise of gasoline prices and the ever-increasing dependence on foreign oil, something has to be done, and quick. At last, we may have finally found a solution, the hydrogen car. Will it surpass the electric and battery cars we have today. In his first term President Bush proposed $1.2 billion in research funding for hydrogen-powered automobiles....   [tags: Electricity, Expensive, Costs]
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Hydrogen as an Alternative Fuel - It’s so hot. Today, millions of motor vehicles are producing greenhouse gases that are flooding into our atmosphere. At the rate society is going, a theme such as global warming is being considered more and more. Not only is this petroleum addiction hurting our environment, it may also have adverse affects on our independence. The United States imports most of its petroleum from foreign nations which could pose problems in the future. This is why Alternative fuels such as hydrogen should be extensively researched....   [tags: Energy ]
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The Chemistry of the Hydrogen Bond - Types of Bonds All bonds, in and around an atom, fall into two categories – Intermolecular and Intramolecular bonds. These two categories can then be broken further down to three subcategories; Intramolecular Chemical Bonds – A chemical bond is a link between atoms via the sharing of electrons through overlapping orbitals. A typical chemical bond will contain two electrons and one electron will usually originate from each of the atoms involved. The electrons shared need not necessarily originate from both of the atoms and neither must the number of atoms involved be two, 3-centred two electron bonds exist....   [tags: intermolecular and intramolecular bonds]
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Analysis of the Hydrogen Atom - Hydrogen (comes from the Greek words, hudôr (water), and gennan (generate)) is one of the simplest elements on earth. It is estimated to make up more than ninety percent of all the atoms, three quarters the mass of the universe. Hydrogen has the highest energy content of any common fuel by weight, but the lowest energy content by volume. Hydrogen is the most abundant gas and the source of all energy that we humans receive from the sun, but is not available on Earth. Our Sun, and most of our stars generate energy by fusioning hydrogen to helium....   [tags: energy, element, resource] 606 words
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Hydrogen as Source of Energy - Movement is an essential key and driving force behind all life. In fact, It is the aspect of our human lives that sets the world into motion and has created the global economy the people know today. Behind all this movement, however, is one overly important and valuable element that is not always going to be around, hydrocarbons. Hydrocarbons are in simple terminology know as petroleum, the life source of fossil fuels in which drives almost every vehicular machine on the road, water, or sky. The dependency on oil around the world is crucial but as scientists know oil is a non-renewable resource so inevitably it will run out....   [tags: fuel, motion, global economy]
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Hydrogen as a Power Source - Hydrogen as a Power Source For the past millions of years we have used fossil fuels, like coal and oil to power many things we use. When the Industrial Revolution came about we ramped up production of these fossil fuels in order to keep up with the demands. In the past few hundred years we have consumed so much fossil fuel that not it is all but gone and left the environment impacted. Currently we are losing 4 billion tons of crude oil reserves and, if the rate keeps going the way it is now we could lose all our oil deposits by the year 2052....   [tags: power generators, industrial revolution] 632 words
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The Concentration of Substrate's Effect on the Rate of an Enzyme Controlled Reaction - The Concentration of Substrate's Effect on the Rate of an Enzyme Controlled Reaction Plan ==== In this investigation I aim to find out whether the concentration of hydrogen peroxide affects the rate at which catalyse breaks it down. The rate of reaction will be measured by how much oxygen is collected. Hydrogen Peroxide -------------------Water + Oxygen --------------------------------------------------- 2H O------------------- 2H O+ O Experiment List =============== * Potato * Potato Borer * Knife * Ruler * Hydrogen Peroxide * Plastic Tub * Water * Conical Flask * Rubber Bung * Measuring Cylinder...   [tags: Papers] 602 words
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Hydrogen: A Utile Element - ... Hydrogen gas is extremely flammable and because of this chemical property, it is used as fuel for the main engine of space shuttles. Hydrogen is an important element and has received a lot of recognition throughout history for its usefulness. Hydrogen was first recognized in 1766 by an English chemist ad physicist named Henry Cavendish (who also discovered nitrogen) in London, England. Written records state that Robert Boyle produced hydrogen gas when experimenting with irons and acids in 1671, however, Henry Cavendish is known for first recognizing hydrogen as a distinct element....   [tags: basic building blocks of matter]
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The Effect of Temperature on Enzyme Activity - The Effect of Temperature on Enzyme Activity Experiment: To investigate the effect of temperature on enzyme activity. The enzyme used will be catalyse. The enzyme catalyse: The enzyme catalyse is a biological enzyme. It is used to break down Hydrogen Peroxide, which is harmful. The reaction that occurs is: [IMAGE] Hydrogen peroxide Water + Oxygen The activity of the enzyme catalyse can therefore be measured by the amount of oxygen (in the form of froth) that is produced....   [tags: Papers] 1496 words
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