The hypothesis was supported by graph 3 and 6 which both showed that an increase in concentration of the reacting species resulted in an increase in reaction rate. Both graphs have a positive gradient which clearly indicates that concentration increases the reaction rate. The hypothesis also proposed that as temperature increases the speed of the reaction would decrease‚ this is evidenced in graph 7 which shows a negative decrease in time as the temperature of the solution increases. This decrease can
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Chemical equations are the symbolic representations of chemical reactions that are made up of reactants and products. It is made up of the chemical formulas of the reactants and the chemical formula of the products. The reactants are the substances or chemicals that takes part in during a reaction and the products are the chemicals are the substances that result from the chemical reaction. Reactants are on the left side of the chemical equation and the products are on the right side of the chemical
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Chemical Reactions Lab Introduction Four different types of chemical reactions were observed in this lab. Synthesis reactions occur when two different elements or compounds form a more complex compound as shown by equation (1). Single replacement occurs when one element replaces another to form a new compound as shown in equation (2). Double replacement occurs when two different atoms in different compounds trade places with one another to form two new compounds as shown in equation (3).Combustion
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A reaction is a chemical process in which substances decomposes‚ or combines with other substances. In this case it is synthesis chemical process which creates new products. However‚ the rate of a reaction can be altered either faster or slower depending on certain variables. These variables are concentration‚ temperature‚ surface area‚ and catalysts. A reaction can be made faster or slower with a variation in the concentration of reactants; a reaction goes faster when there is an increase in concentration
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of the many chemical reactions involved in the metabolism of living organisms Enzymes are classified into several broad categories‚ such as hydrolytic‚ oxidising‚ and reducing‚ depending on the type of reaction they control. Hydrolytic enzymes accelerate reactions in which a substance is broken down into simpler compounds through reaction with water molecules. Oxidising enzymes‚ known as oxidises‚ accelerate oxidation reactions; reducing enzymes speed up reduction reactions‚ in which oxygen is removed
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enzyme involves monitoring the change in absorbance of the reaction medium at 405 nm. Exergonic (i.e energy producing reactions) exhibit a negative free energy change. Sometimes these reactions occur spontaneously‚ but generally some energy must be supplied to initiate the reaction; in other word an energy barrier exists between the reactants and the products. The “energy barrier” represents the activation energy of a chemical reaction. In this practical the activation energy of hydrolysis
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Crystal Violet Reaction Goals: Under stand 1st‚ 2nd ‚ and 3rd order chemical reactions‚ learn graphing options available on LogerPro Purpose: Determine the reaction order with respect to crystal violet for the reaction between crystal violet and sodium hydroxide. Introduction: The rate expression for this reaction is of the form: rate = K(CV+)M(OH-)N Where k = re constant‚ m is the order of the reaction with respect to the concentration of CV+‚ and n is the order of the reaction with respect of
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Written summary The reaction time test that had taken place involved the students to sit at a laptop and press the go button on the screen with their touch pad and wait for the stimulus to appear on the screen. When this stimulus would appear the student would then have to press on their touchpad with their writing hand and the amount of time that it took for the student to react to the stimulus and press the touchpad was the reaction time that was timed. The test was taken 3 times and the average
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Breland Crudup December 9‚ 2012 The Effects of Music on Reaction Time in Human Beings The Effects of Music on Reaction Time in Human Beings When performing many feats of physical skill‚ calculating how fast a person can perform the action has become a custom that has gained prominence in recent years. Observing how long it takes a person to perform an action‚ now known as observing the reaction time‚ has even gained enough importance to the point that it has even used in some scientific investigations
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Does age affect reaction time? Aim: To find out if age affects reaction time through the use of an online program created by Human Benchmark Background information: in a study conducted by the University of Michigan‚ the most accepted theory for the effect of age on reaction time is that older people have a slower reaction time in comparison to people of a younger age. This is because adrenaline levels and reflexes are in best condition when young. Another reason of reaction times decreasing with
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