Aim: This experiment will aim to show how the amount of substrate affects the rate of the reaction. Hypothesis: In this experiment I think the amount of substrate will simply increase the reaction. As I increase the surface area of the potato the gas given off from the reaction will increase. Therefore to sum things up‚ my hypothesis is when the Independent variable increases so will the dependant variable. Independent variable: - Surface area of potato Dependant variable: - Gas Controlled
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Biology coursework How does the temperature affect the rate of reaction? Introduction For our experiments‚ I was investigating what affects the rate of reaction. We used Hydrogen peroxide to test the rate of reaction‚ with the temperature of this being our variable that we changed. Hydrogen peroxide is a clear‚ colourless liquid which has various amounts of uses within the laboratory‚ industrial purposes and even in our households. It is mainly used for cleaning products and hair dye but is
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The purpose of this review paper is to discuss the effect of temperature on enzyme- catalyzed reactions. This is relevant because many diseases can be diagnosed and controlled by the processes of enzyme activity (Worthington 2015). If more information is not found about enzyme activity and how it is affected‚ many diseases may go undiagnosed and uncontrolled. Temperature is a type measurement that does not only consist of heat. It is the measurement of the mean kinetic energy of any group of particles
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Name Lab Section GTA Station # 5. Extraction Pre-lab questions Complete the following questions and submit before beginning the experiment. 1. Which layer will be the aqueous layer when using dichloromethane (methylene chloride) as the solvent (i.e.‚ top or bottom)? Which layer will be the aqueous layer when using ether as the solvent? 2. When everything has been separated in Part D‚ which compounds will be in test tubes 1‚ 2‚ and 3?
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r Lab Report 5 Introduction to the Classes of Chemical Reactions Course: Chem. 1151L‚ Tuesday & Thursday June 23‚ 2011 Mr. Nasir Uddin Pre Lab Questions: 1. CaBr2 (aq) + K3PO4 (aq) → CA(PO4)2(S) + KBr (aq) = Ca3(PO4)2 + 6 KBr Double Replacement 2. Li(s) + O2(g) = Li2O(s) =2 Li2O Decomposition 3. CH4 + O2 = CO2 + H2O = CO2 + 2 H2O Combination 4. AgBr(s) = Ag (s) + Br2(l) = 2 Ag + Br2 Combination 5. Mg(s) + H2SO4 (aq) = MgSO4 + H2
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Rachel Rodriguez Anthony Chirumbolo December 8‚ 2011 Chemistry I‚ Pd 11‚ Station K Evidence of Chemical Change Purpose To observe several chemical changes (reactions) and the evidence they exhibit for chemical change. Data See page 3 Analysis The two terms that describe possible energy change in a chemical reaction are Exothermic‚ for example when a gas is formed when Copper II Chloride and Aluminum are mixed‚ and Endothermic‚ for example when copper II Hydroxide is heated
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Daphnia Heart Rate Background: In the world today‚ there are many chemicals that people use to fix or help with issues within their own bodies. Some of these chemicals may include things like caffeine‚ nicotine‚ and alcohol. These supplements can have substantial effects on other things within the body like the brain‚ liver‚ and especially the heart. For example‚ many chemicals like caffeine‚ nicotine‚ aspirin‚ and sleep aid all have effects on the body which can cause your heart rate to increase
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As stated previously the purpose of this experiment was primarily based on about chemical changes. Many chemical changes are viewed through a screen‚ or read from a book. In this experiment‚ chemical changes are viewed directly from the eyes of the scientist. The procedure first begins by gathering all needed materials. Next‚ laying the first powder on four wells‚ followed by the next powders‚ each powder was placed on four wells. The liquids were then placed on each powder using the four droppers
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Reaction Rate Coursework Aim To see how the concentration of a reactant affects the rate of reaction‚ in this case sodium thiosulphate and acid. Scientific Background For a reaction to occur‚ the particles of the reactants must be colliding with each other with enough energy‚ the amount of energy needed for the reaction is called activation energy. Activation energy is altered by temperature‚ concentration‚ surface area of and the pressure on the reactants. Stirring the reactants also increases
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Jashandeep Gill Gammellos Chemistry Density is one of the fundamental principles of physics. Density is the reason why a plank of wood floats on water while a piece of metal several times smaller will sink. Density of an object is measured in g/cm³ or g/cc. The equation is D=M/V‚ D being the density of the object‚ M being the mass of the object‚ and V being the volume of the object. Mass is the space an object takes up. It is the amount of matter present in an object. Mass is measured using
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