1P Paper Towel Absorbency Experiment Write-Up Purpose: The purpose of this experiment is to conduct a valid experiment‚ realize that the way I conduct an experiment influences the data‚ and I want to know which paper towel has the higher absorbency times. My hypothesis is that bounty will be the quicker picker upper Materials and Methods: As a class we chose that our control out of the brands provided (Bounty‚ Viva‚ Wal-Mart‚ and the School brand) would be the Schools brand of paper towel
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Introduction Enzymes are proteins that are involved in all the chemical processes in living things. As they are made of proteins they are affected by pH and temperature. Enzymes are catalysts; they speed up chemical reactions without being changed themselves. Digestive enzymes speed up the breakdown of large food molecules into smaller ones so that the blood can absorb them. Enzymes turn a large starch molecule into thousands of tiny glucose molecules. Enzymes end in ’ase’. There are thousands of
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combination will result in a unique ratio‚ thus allowing us to compare unknown samples and discover their identity. The Rf value is essentially the rate the dotted sample will move in accordance to the solvent rising up the chromatography strip via capillary action. As the solvent gets sucked up to the solvent front‚ the sample dissolved into the paper will “grab” onto the moving solvent. Polarity plays a huge role on the ratio‚ as it affects the substance’s ability to migrate with the solvent. A higher
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varying temperatures are targeted towards being at 10ºC‚ 20ºC‚ 30ºC‚ 40ºC‚ and 50ºC. It is highly improbable that each trial for each of the 5 different temperatures will be the exact temperature that was targeted‚ so it’s just important that you end up having a temperature fairly close to the targeted temperatures so that the rates of reactions that you do receive are as correct as possible. The rates of reaction will be obtained using an apparatus that will guide the carbon dioxide gas being produced
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Abstract The purpose of this experiment is to determine the concentration of acetic acid in vinegar by using 0.1 M HCl and NaOH solution. By performing three titrations to determine the concentration of the base‚ the concentration of the acid was determined to be 0.600 M. It was possible to determine its concentration by standardizing the sodium hydroxide solution used for the first three titrations and by using phenolphthalein to indicate its equivalence point. In conclusion‚ although there were
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Abstract There are many methods employed to precipitate proteins out of solution. In this experiment we manipulated many physical and chemical variables in order to achieve purification of a protein via precipitation. In the first part of the experiment we purified the protein casein by modifying it’s pH. In the second part of the experiment we manipulated the ionic strength of albumin in egg whites‚ in a process called salting out. By manipulating these chemical properties we were able to
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Science 8 Observing Onion Cells ***Do not write anywhere on this piece of paper!!! It will be used again this afternoon!!!***** Instructions. On a piece of paper‚ write the title (see above)‚ the date‚ your block‚ and your name. Then copy out the problem (see below). Problem. What structures can you observe in an onion cell when using a compound light microscope? Hypothesis. On your lab report‚ below your Problem‚ write a Hypothesis that will “answer” the problem. Start your
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Eco-Column Lab Write up Alicia Whiteley Block 4 Abstract: In this research and experiment we were testing whether or not we can maintain a healthy eco-system based off creating one from scratch. We initially went into this experiment confident that we were going to be able to keep our fish alive which was proven wrong mid-way through due to high levels of turbidity and the state of the fish. After collecting all of our data‚ we maintained a healthy terrestrial level and a good PH
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ANIMAL HISTOLOGY LAB REPORT OBJECTIVES • To identify the structure of various types of animal tissues • To explain the organization of the tissues HYPOTHESIS • Various type of tissues can be identified their function by observing the shape and structure of the cells because different tissues have different functions. • The usage of higher magnification of objective lens produces a better image. INTRODUCTION Internal structure of animal is made up cells. Cells aggregate and forms tissue. Animal
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Hair Conditioner Lab Intro The hair industry has been been devoted to answering a need of our american people for years. A market mainly targeted towards women‚ the search for products that will soften‚ repair‚ rejuvenate‚ enlarge‚ and even strengthen hair is unending. The question that we posed for this lab was: Does hair conditioner really actually strengthen hair as it promises? Materials Conditioner Plastic cup Forceps Hair (from Nate‚ Alyssa‚ Makenna‚ and Lisa) Microscope Water
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