Experiment 2: IDENTIFICATION OF UNKNOWNS BY TLC AND MP IN COMBINATION Introduction: Thin layer chromatography (TLC) is one of the most valuable techniques in organic chemistry. This is a best method of separating and identifying mixtures of two or more compounds. The separation is accomplished by the distribution of the mixture between two phases: one that is stationary and one that is moving or mobile. Chromatography works on the principle that different compounds will have different
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Materials - 1 matchbox - 1 candle - 1 yellow colored balloon - 1 blue colored balloon - Half a cup of water Procedure: 1. For this experiment‚ the independent variable is whether the balloon is filled with water or not. The dependent variable is what happens to the balloon when it is placed above the lit candle. This is determined by observing the balloon. The constants (control variables) are how much the balloon is inflated and the amount of water in the balloon.
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EXPERIMENT NO. 9 CHEMICAL EQUILIBRIUM Audrey De Castro FCD3‚ Group 9‚ Ms. Sarah Sibug Kristine Tavares March 27‚ 2014 I. ABSTRACT Chemical equilibrium is mostly involved in industrial processes such as synthesis
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The hypothesis If a chemical reaction occurs‚ then there will be indicators of a chemical change‚ was supported throughout this experiment. Throughout this experiment there were several reactions that took place‚ and an indicator of such chemical reactions could be seen throughout each one. The first piece of identifiable evidence was present in the first step‚ which was when copper (II) nitrate and sodium hydroxide were combined. When stirred‚ a blue precipitate formed at the bottom of the test
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EXPERIMENT 5 REDOX TITRATION: TITRATION USING SODIUM THIOSULPHATE Objectives 1. 2. To prepare a standard solution of potassium iodate for use to determine the concentration of sodium thiosulphate solution accurately. To acquire the proper techniques of carrying out a titration. Introduction Redox titrations using sodium thiosulphate as a reducing agent is known as iodometric titration since it is used specifically to titrate iodine. The reaction involved is: I2 + 2Na2S2O3 I2 + 2S2O322NaI + Na2S4O6
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This Changes Everything is a book that was created to disprove what people have chosen to believe in regards to climate change and their involvement in it. Naomi Klein forces people to remember climate change and disallow from being swept under the rug by climate change deniers. In this book‚ Klein attempts to accomplish the nearly impossible task of making everyone reflect on how much harm they have done to the environment. She debunks arguments against climate change in an attempt to get people
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Correlation between the chemical activity of Amylase and change in temperature ABSTRACT This experiment focuses on how the change of temperature affects the rate of reaction of amylase. In the experiment there were four different environments that each contained 2 test tubes. Each test tube consisted of the same concentration and amount of starch and amylase. After having each test tube placed in these environments for several minutes a droplets of each mixture was placed onto each slot which
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Unit 203 Ben Thomas K2D39/40/41 Why do we observe children? There are many reasons why we observe children. Mainly children are observed because we want to find out what stage of development they are at and whether it matches the average stage of development for their age‚ it could also be that there has been a change in there behaviour. By observing them we will find out what causes them to react and become stressed. Another reason why we observe children is assess and support their individual
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Experiments in physics lab report Department of Electrical Engineering Isabela State University Ilagan Campus‚ Calamagui 2nd‚ City of Ilagan‚ Isabela baccaljoemel@yahoo.com Submitted to: Engr. Rafael S. Ramos Physics12 Professor Submitted by: Joemel L. Baccal BSEE IIA Experiments in Physics Lab Report Joemel L. Baccal Department of Electrical Engineering Isabela State University - Ilagan Campus‚ Calamagui 2nd‚ City of Ilagan‚ Isabela baccaljoemel@yahoo.com Abstract In
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DIFFDiffusion of Chemicals * Diffusion-is the process whereby particles of liquids‚ gases‚ or solids intermingle as the result of their spontaneous movement caused by thermal agitation and in dissolved substances move from a region of higher to one of lower concentration. The rate of diffusion depends on the size of the surface area to the volume in the cell. The higher the surface area of cells in relation to their volume‚ the quicker diffusion takes place. Experiment on Diffusion Aim: to
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