Kinetics of the Harcourt-Essen Reaction Name: Manpreet Kaur Candidate Number: 7123 AS and A2 Aims: AS AIMS: 1. Investigate the effect of temperature on the rate of reaction. For this aim 3 sets of results will be obtained by timing how long it takes for the colour change to occur in different temperatures determined by the use of an electric water bath. With these results‚ the effect of temperature on the rate of reaction will be investigated. 2.
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products that were begin made. History saw a boom in the way products were made‚ the way people lived their lives. There were innovations in machinery such as trains and tools in manufacturing‚ but there were also innovations in the way people thought. During the Industrial Revolution we saw minds such as Marx and Darwin begin to set their thoughts onto the people of the world. Having said that‚ there was also unrest in the world‚ this was the time of the Revolutionary War and the Napoleonic War. All of
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The Rate of Diffusion in Different Temperatures Purpose: To see if the temperature of a solution will change the rate blue diffuses in it. This will be tested by timing how long it takes dye to diffuse in warm water‚ cold water‚ and room temperature water. Hypothesis: I think that the dye will diffuse at a faster rate in the warm water than in the cold water. I believe that the room temperature water will have the dye diffuse faster than the cold water but slower than the warm water. Variable:
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Effect of temperature on enzyme activity In this experiment… Independent variable: Temperature of the amylase Dependent variable: Enzyme activity which is measured by the time for disappearance of starch Controlled variables: Volume of amylase; volume of starch solution; concentration of amylase; concentration of starch solution Prediction of results i) At low temperature‚ the rate of amylase activity is very low. ii) At optimum (=best) temperature‚ the rate of amylase activity is the
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slavery‚ along with significant changes in American politics‚ economics‚ and society. It set the stage for the Reconstruction era when the US strove to integrate newly emancipated African Americans into society through healing and justice. However‚ this healing and justice proved to be more complex than anticipated. Many white Southerners resisted the positive altercations and created their own ‘loopholes’ as a form of backlash. The most important changes that occurred during Reconstruction were voting
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butterflies need to regulate their body temperatures through thermoregulation. There are two types of ways to regulate body temperature. The first one is ectothermy. Ectothermic animals‚ or cold-blooded animals‚ rely on outside sources to heat or cool themselves. Cold-blooded animals can lie under the hot sun to heat themselves up and prepare for flight or to move around. However‚ if there is no source of heat‚ they are not able to raise their body temperature to the correct level for movement. Butterflies
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in females than we do males. In males the relationship between overall dominance and testosterone are one in the same. Testosterone‚ (which was also represented as “T” in the study) levels for male athletes show variances in ways we assume both during and after a competitive match. The male athletes T levels rise shortly before their match in anticipation. However after the match their T levels will depend on whether that person has won or lost at their competition. Competitiveness and testosterone
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Hypothesis The optimum temperatures of Alcalase and Savinase will be different. Above and below their optimum temperatures activity will decrease. Biological explanation This investigation is designed to look at the effect of temperature on the activity of the proteases Alcalase and Savinase. By the end of it I hope to know the optimum temperature of both proteases. The substrate I am going to use during the experiments is the protein gelatin‚ which is a translucent‚ colourless‚ brittle solid
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Chemical Reactions Chemical Change • reorganization • original substances form new substances with different formulas • may or may not involve a change of state • symbols used to describe chemical reaction are known as a chemical equation • Chemical equations do not have equal signs (=) they have an arrow Chemical Equations • Must follow the Law of Conservation of Matter • atoms can neither be created or destroyed during a chemical reaction • What
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HLA complex is located on 24. Sum of all attractive forces between antigen and antibodies 25. Strength of primary interaction between a single antibody and combining site and an epitope 26. Antibodies in Rh system typically react at what temperature 27. Blood components prepared in BB except: Fibrinogen‚ Cryosupernatant‚ Deglycerolized RBC‚ Washed RBC 28. Not necessary for autologous transfusion 29. Immediate precursor of H gene 30. Blood group system that is associated with late
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