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  • Effect Of Temperature On Rate Of Reaction
    565 words
    Effect of temperature on RUN rate Daniel Amir eh 10-3 Khalil KarajehFactors affecting rate of reaction: Surface area - as we increase surface area, we increase the reaction rate. The more the collisions the faster the reaction. Concentration - as we increase concentration we increase the reaction rate. In reaction with between gases, increasing the pressure, increase the reaction rate. Temperature - as we increase the temperature, we increase the reaction rate. Raising the temperature makes part...
  • 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...
  • 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...
  • 1 Cm 3 Starch Solution
    2,574 words
    PLANNING Investigating the Kinetics of the reaction between Iodide ions and Peroxodisulphate (VI) ions By the use of an Iodine clock reaction I hope to obtain the length of time taken for Iodine ions (in potassium iodide) to react fully with Peroxodisulphate ions (in potassium Peroxodisulphate). I will do three sets of experiments changing first the concentration of iodide ions, then the concentration of Peroxodisulphate ions and finally the temperature of the solution in which the reaction is t...
  • Enzyme's Activity B Temperature Optimum Most Enzymes
    615 words
    The plot of enzyme activity vs. pH is often 'bell shaped's ince two different amino acid groups of the enzyme are being titrated to different states of ionization at the different pH values. This means that only one of the two possible ionization states of the amino acid side chain is effective in enzyme catalysis - in other words, if an acidic side chain like Glu is involved in catalysis, it probably only works when it is ionized; since Glu side chain acid groups have a pK around pH 5, at pH va...
  • Reaction Of Sodium And Hydrochloric Acid
    1,274 words
    Introduction Over the next few weeks I will be doing several attempts of the same experiment that involves the reaction of sodium and hydrochloric acid, I will be closely watching the reaction and how long in takes for the reactants to react. As yet I have not decided which of the several variables I will be changing. I also aim to take results of the reaction down onto a table, which then will be transferred onto a line graph, which will show us the nature of the reaction. Variables There are f...
  • Effect Of Temperature On The Enzyme Catalase
    1,778 words
    To investigate the effect of temperature on the enzyme Catalase. INTRODUCTION The aim of this experiment is to determine the effects of varying temperatures on enzyme (Catalase). We will conclude the experiment by establishing the enzymes optimum temperature (the temperature at which it works best at). We will also carry out some simple experiments using the substrate Hydrogen Peroxide. Hydrogen Peroxide + Catalase -- Water + Oxygen 2 HO -- - HO + O + heat PLAN The aim of this experiment is to d...
  • F Lubber A Conductive Polymer
    507 words
    View any movie related to concepts in Chemistry and critically comment on the accuracy of some of the Scientific facts. You are to write about the: a) scene (s) as they appear in the movie) science that is represented in that / those scene (s) and why they are not accurate) amendments to the erroneous fact (s) with the REAL SCIENCE. Movie: Flubber (Disney's) Scene 1 Professor Brainard was trying to remember something important on his schedule when he realized that Weebo had deleted his wedding d...
  • Conditions Suitable For An Industrial Process Haber
    1,190 words
    1. The Haber Process During the first decade of the twentieth century the world-wide demand for ammonia for use in fertilisers (in the form of nitrates) and in the production of explosives for use in mining and warfare could only be satisfied on a large scale from deposits of guano in Chile (2). Though this deposit was of huge size (approximately five feet thick and 385 kilometres long) it represented a rapidly depleting resource when compared to world-wide demand. As a result of this there was ...
  • Heats Of Reaction For Salts In Water
    3,336 words
    Introduction A team was sent to the chemical manufacturing division of a small chemical company to help the technicians with experiments. Since the notes written by the technicians were inaccurate and unfinished, all of the experiments they had preformed needed to redone and documented correctly. The head of the company gave the new team the task of trying to figure out why some chemical reactions caused the reaction vessel to get cold and others caused the vessel to get hot. The group construct...
  • 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 ...
  • Active Site On The Enzyme Molecule
    1,922 words
    Information on enzymes & rennin Enzymes are biological catalysts that speed up reactions without being affected so that they can be used to speed up another reaction. Enzymes are soluble globular proteins. Enzymes reduce the energy needed to make a reaction happen. This energy is known as the "activation energy". We need enzymes to stay alive, without them, the reactions in our body would take place far too slowly. Also, we need to be able to control how fast certain reactions take place, if we ...
  • Heat Of Reaction And Heat Of Formation
    1,033 words
    Lab report Heat of Reaction Introduction: The purpose of the lab was to through experiments calculate the heat of reaction and heat of formation, and see if we got a realistic result according to facts. We should see if Reaction 1 and 2 equalled 3 We created 3 reactions and then calculated their enthalpies. Work plan Substances: Material: Material: NaOH (s) 3 Beakers, 300 ml NaCl (aq) 0.50 M Thermometer HCl (aq) 0.25 M Balance Deionised water Work plan Since the lab was pretty time consuming we ...
  • Acid Marble Chip Reaction
    3,231 words
    Aim: Investigate what affects different temperatures of hydrochloric acid have on calcium carbonate. Background Information: For a reaction to take place, collisions must occur between the particles. If the collisions occur more frequently then the rate of reaction will increase. The rates of reactions can be altered in many ways. The variables are: The size of the particles of a solid reactant The concentrations of reactants in solution The temperature The presence of light The addition of a ca...
  • Hydrochloric Acid And The Marble Chips
    710 words
    dgfhhdhdInvestigating rates of reaction AIM The aim of my investigation is to find out how rates of reaction are affected by temperature, specifically how the rate of the reaction between hydrochloric acid and marble chips is affected by the temperature of the hydrochloric acid. VARIABLES The variables in this experiment are: . The mass of the marble chips. The size of the marble chips. The amount of hydrochloric acid used. The concentration of hydrochloric acid used. The temperature of the hydr...
  • Reaction Rate Between The Catalase And Hydrogen
    1,630 words
    Enzyme Investigation Enzymes such as Catalase are protein molecules, which are found in living cells. They are used to speed up specific reactions 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. It is used to remove Hydrogen Peroxide from cells. Catalase speeds up the decomposition of Hydrogen Peroxide into water and oxygen because the shape of its active site matches the shape of the ...
  • 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...
  • Temperature For The Enzyme Amylase
    2,232 words
    An Investigation Into The Factors Affecting Then Investigation Into The Factors Affecting The Activity Of The Enzyme Amylase – Planning Hypothesis I predict that as the temperature increases, the speed of the reaction will increase. When a particular temperature is reached I believe the rate of reaction will dramatically decrease. I believe this because most chemical reaction happens faster when the temperature is higher. At higher temperatures molecules mover around faster, which makes it...

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