will increase the speed of reaction as the greater the surface of the solid reactants‚ the more particles are required to expose and ‘cover’ the capacity of the solid. Increased surface area results in an increased chance of collisions between reactant particles. Since the collisions become more frequent and abundant‚ the rate of reaction increases. Aim The aim of the experiment is to see if a greater surface area of a dissolvable tablet creates a faster or slower reaction Independent Variable
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Biology Lab Report - Movement in and out of cells (4A) Shiang Chen Ting (24) Sec 313 Introduction The aim of this experiment is to explore the factors which affect the movement of materials in and out of the cells. The dark red or purple colour of Beetroots is caused by a pigment called betalain that is found within the vacuole of the beetroot cells. The pigment remains intact within the cell if the cells are not “stressed” by the external environment. In this exploration‚ two factors that affect
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quickly (pH-meter showed number 11-12). The reaction flask was heated and shaken for 30 minutes‚ followed by decantation to obtain base Memantine (without Hcl). The reaction flask was connected to rotary evaporator equipped with vacuum pump to remove excess solvent (i.e.‚
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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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Comparison of the rate of reaction and yield of glycerol in saponification with different triglycerides Chemistry EE Candidate number: 0019 Word count: 3974 TABLE OF CONTENTS CONTENTS 2 INTRODUCTION 2 RESEARCH QUESTION 5 BACKGROUND INFORMATION 5 METHODOLOGY 10 DATA PRESENTATION AND PROCESSING 13 CONCLUSION 24 EVALUATION 24 BIBLIOGRAPHY 26 Introduction In 1779‚ Carl W. Scheele‚ a Swedish chemist‚ discovered a new transparent‚ syrupy liquid by heating olive oil and litharge . This
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substances that speed up the chemical reaction by decreasing the activation energy. In biology catalyst is called biological catalyst‚ and enzyme is an example of biological catalyst. Enzyme is very important for biochemical reactions‚ as it helps the reaction to become faster than usual. The reactions with enzymes will react 10 billion times faster than those solutions without enzymes. (clitoncc)The enzymes can only react with one particular reaction‚ in order for the reaction to react it needed to find the
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Factors Affecting Reaction Rate Bob Jones Josh October 2‚ 2014 Period 3 Introduction: In reference to the collision theory‚ molecules act as small spheres that collide and bounce off each other‚ transferring energy among themselves when the collide. In order for a reaction to occur‚ there must be collisions between molecules. Through experimentation‚ factors are discovered that influence the reaction rates of chemical reactions include the concentration
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experiment to find the optimum temperature and pH for starch on amylase. The experiment was carried out in one day. The researcher and a partner did the experiment based on a lab manuel from class. Data was collected from the experiment and to be displayed on graphs. Then the optimum pH and temperatures were to be calculated based on the findings. The hypothesis was disproved due to the optimum pH of 5 but the other findings supported the hypothesis of the optimal temperature being 45 degrees Celsius.
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makes them highly specific and only work on one or a few similar chemical reactions. Enzymes themselves are not consumed in the reaction‚ but they help attract substrates into correct position to undergo chemical reaction. Enzymes greatly speed up the rate of biological reactions by lowering the energy of activation. To get a sense of the speed and efficiency of enzymes‚ substrates can be transformed to products at the rate of thousands of times per second with the enzymes. If we consider the total
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INVESTIGATING THE EFFECT OF TEMPERATURE ON THE RATE OF ENZYME ACTIVITY. To investigate the effect that temperature has on enzyme activity I am going to use the enzyme amylase‚ which is used as a biological catalyst to break down starch‚ which cannot pass through the gut wall due to the size of the molecules‚ into smaller ones. Amylase is a carbohydrase‚ which converts starch to simple sugars in the Salivary Glands. Three features of all enzymes are: They are always proteins. They are specific
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