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  • Increase In The Rate Of Reaction
    1,824 words
    Research Enzymes exist in all living things. They are composed of polymers of amino acids and are produced in living cells. Each cell contains several hundred enzymes, which catalyse a vast number of chemical reactions. Enzymes are known as Biological Catalysts as they dramatically increase the rate at which reactions occur within living organisms, without being used up or effecting the reaction in any other way. Enzymes catalysis saves the need for an increase in temperature in order to speed u...
  • Half Enzyme Concentration
    1,434 words
    Introduction "Enzymes are biological catalysts that carry out the thousands of chemical reactions that occur in living cells" (Eberhard, 1985). Enzymes are groups of proteins that are made of long chains of amino acids. They serve as catalysts by lowering the activation energy for chemical reactions. Cofactors and coenzymes are introduced when the enzyme needs help to catalyze the reaction. They are nonprotein helpers that bind to the active site; coenzymes are organic cofactors such as vitamins...
  • Initial Rate Of The Reaction
    1,017 words
    PLAN Introduction: After having built up knowledge about the kinetics of reactions I decided to do an investigation in this area. I was initially introduced to this particular reaction 1 in EP 6.4 and then in AA 2.1. I was interested in using this reaction as a means of potentially supporting and quantifying some of the theories that I have studied along with also perhaps extending on them. Aim: Using a clock reaction I shall: o Investigate the effect of concentration for each reactant and use t...
  • Faster The Rate Of Reaction
    1,652 words
    Experiment: Investigation into the factors that effect the rate of reaction I am going to investigate how different factors affect the rate of a reaction. Introduction What is a reaction? A reaction is when two particles (reactants) join to form a new product or products. What is rate? Rate is a measure of how fast or how slow something is. Rate is a measurement of the change that happens in a single unit of time, any suitable measurement can be used such as seconds, minutes, hours or even days....
  • Enzymes Help Catalyze Reactions
    438 words
    Discussion / Analysis 1. If gas bubbles form then fermentation occurred. Glucose. Carbon dioxide. The enzyme didn't recognize the structure of g lactose, because of the orientation of the H and OH on the carbon 4 is different than glucose. The enzyme only identifies very specific substances. 2. In order to determine how fast a reaction is occurring there must be a basis for measurement. There must also be an indicator substances to determine the change that took place. Then there must be a tool ...
  • Increase In The Reaction Rate
    947 words
    Investigating Rate of Reaction between Iodide ions and Peroxodisulphate ions with respect to Temperature and use of a Catalyst Introduction The aim of this experiment was to investigate the affect of the use of a catalyst and temperature on the rate of reaction while keeping all the other factors that affect the reaction rate constant. In the reaction, potassium and potassium iodide will be used to provide the ions and iodide ions respectively. The ionic formula for the reaction is as follows: S...
  • Concentration Of The Acid The Reaction Rate
    3,371 words
    Rates of Reaction BACKGROUND INFORMATION What affects the rate of reaction? 1) The surface area of the magnesium. 2) The temperature of the reaction. 3) Concentration of the hydrochloric acid. 4) Presence of a catalyst. In the experiment we use hydrochloric acid which reacts with the magnesium to form magnesium chloride. The hydrogen ions give hydrochloric acid its acidic properties, so that all solutions of hydrogen chloride and water have a sour taste; corrode active metals, forming metal chlo...
  • Increase In Reaction Rate
    2,012 words
    Investigate A Factor Which Affects the Rate Of Fermentation Of Yeast This experiment is investigating one of the factors which affects the rate of fermentation of yeast. Several factors affect the rate of reaction: Increasing the concentration. (See the lock and key theory.) If the substrate (glucose) is increased, then there would be more keys for the locks, therefore an increase in reactant concentration leads to an increase in reaction rate. The surface area, the bigger the surface area, the ...
  • Higher The Temperature Of Acid
    227 words
    How does temperature affect the rate of reaction between Hydrochloric acid and marble chips? Aim From this investigation, we intend to find out if the temperature of acid, in this case Hydrochloric acid, affects the rate of reaction between itself and marble chips. Hypothesis We expect to find that the higher the temperature of acid, the quicker the rate of reaction. The rate of reaction will depend on the rate of collisions between particles, we expect the rate of collisions to be greater the h...
  • Faster Rate Of Reaction
    1,329 words
    Planning Aim! V To investigate the effect of concentration on the rate of reaction between marble chips and excess hydrochloric acid. Introduction Rate Of Reaction Reactions can either be slow or fast. For example, for concrete to set, it takes two to three days. However, when solutions of silver nitrate and sodium chloride are mixed, a precipitate is formed very quickly. Rate is defined as the! SS measure of change that happens in a single unit of time!" . Measuring exactly how fast a reaction ...
  • Acid The Faster The Rate Of Reaction
    3,444 words
    Aim The aim of this investigation is to find out how concentration of acid affects the rate of reaction between hydrochloric acid and magnesium ribbon. The rate of a chemical reaction is a measure of how fast the reaction takes place. It is important to remember that a rapid reaction is completed in a short period of time. Some reactions are very fast, e.g. (the formation of silver chloride precipitate when silver nitrate and hydrochloric acid solutions are mixed. In this investigation we will t...
  • Initial Rate Of Reaction Against Enzyme Concentration
    333 words
    The results of an investigation in which different amounts of catalase were added to the same amount of hydrogen peroxide. You can see that the shape of all five curves is similar. In each case, the reaction begins very quickly (steep curve) and then gradually slows down (curve levels off). Because the amounts of hydrogen peroxide are the same in all five reactions, the total amount of oxygen eventually produced will be the same so, if the investigation goes on long enough, all the curves will m...
  • Temperature By 10 The Rate Of Reaction
    1,777 words
    TITTLE; Effect of temperature on the rate of reaction Aim I plan to investigate the effect of temperature of acid, in the reaction between concentrated hydrochloric acid and magnesium ribbon. The rate of chemical reaction is a measure of how fast the reaction takes place. It is important to know that a rapid reaction is completed in a short period of time. Some reactions are very fast, e.g. a reaction after a fire work is set. In this investigation I will test different temperatures of acid reac...
  • Rate Equation For The Reaction Between Sodium
    504 words
    Chemistry Coursework- Planning Introduction In this piece of coursework I will attempt to design an experiment that will lead to a graphical procedure to determine the rate equation for the reaction between sodium thiosulphate and hydrochloric acid Scientific knowledge Before any chemical reaction occurs two or more molecules of the reactants must successfully collide together in the right orientation (the correct angle), the more collisions the faster the reaction rate. Concentration is just on...
  • Reaction Between Magnesium And Hydrochloric Acid
    2,964 words
    Aim I plan to investigate the effect of concentration of acid, in the reaction between dilute hydrochloric acid and magnesium ribbon. The rate of a chemical reaction is a measure of how fast the reaction takes place. It is important to know that a rapid reaction is completed in a short period of time. Some reactions are very fast, for example; the formation of silver chloride precipitates when silver nitrate and hydrochloric acid solutions are mixed. In this investigation I will test different c...
  • Reaction Of The 0 1 M Hcl
    1,915 words
    Experiment 34 Factors Affecting Reaction Rates Aim To observe the effects of temperature, catalysts, concentration, particle size and surface area on the rates of chemical reactions and to explain each of these effects in terms of kinetic-molecular theory. Equipment SS safety goggles SS 1 10 mL graduated cylinder SS 1 100 mL graduated cylinder SS 16 medium test tubes SS 1 test tube rack SS 2 250 mL beakers SS centigram scales SS 1 crucible tongs SS 1 thermometer SS 1 250 mL plastic bottle SS 1 r...
  • Factors Change Reaction Rates
    1,256 words
    Reaction, Rate of, amount of a substance that takes part in a chemical reaction in a given time. Chemical reactions happen at widely different rates. The weathering of buildings and statues caused by acid rain is very slow, but the reactions that take place when a firework explodes are very fast. Most reactions take place at a rate somewhere between that of a firework explosion, which is almost instantaneous, and that of weathering stone. Finding out how quickly reactions take place and understa...
  • Light Effect Of Temperature On A Reaction
    253 words
    Effect of temperature on a reaction. Aim My aim is to investigate if the temperature causes the rate of reaction to increase, and to see how it affects the molecules entering the active site. Background Information There are six factors that affect the rate of a reaction: . Concentration (or a solution). Temperature. Surface area (or a solid). Light Effect of temperature on a reaction. Temperature. Light. A catalyst. Pressure (of a gas) For the chemical reaction to occur, the molecules must coll...
  • Enzyme Solution Concentrations
    1,147 words
    Introduction In this experiment, we intended to investigate the effect of the concentration of catechol oxidase on the reaction rate of catechol to ortho-quinone. Living things, to increase the speed of chemical reactions, use enzymes. Enzymes are a type of protein. Because of the fact that enzymes are proteins, they have certain shapes. These shapes create areas in which the substrate, the chemical that is broken down by the enzyme, can fit in and be broken down. The way that this reaction take...
  • Rates Of Reaction Increasing The Temperature
    1,387 words
    An Investigation into the factors affecting the rate of reaction between magnesium and hydrochloric acid Planning Hypothesis I predict that as the temperature increases, the speed of the reaction will increase therefore the gas will be produced faster. I believe this because most chemical reactions happen faster when the temperature is higher. At higher temperatures molecules mover around faster, which makes it easier for them to react together. Usually, a rise of 10 OC will double the rate of r...

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