Will no gum or having gum improve test scores? Data Analysis The question being answered in this experiment is‚ “Which gum will improve memorization the best?” The hypothesis for this experiment is‚ “If the gum flavor is altered‚ then one flavor will improve memorization more than another flavor.” The independent variable is the flavor of the gum. The dependent variable is the scores after taking the test with the different flavors. The control group was the test scores without any gum.Experimental
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During the Gilded Age‚ in the end which would be from 1875-1900 it was an era of prosperity and poverty. It is often remembered by the lifes of those like the Rockefellers and Carnagies‚ while the other majority of the people were working class. However‚ the movement towards organized labor was unsuccessful in improving the position of workers because of the failure of strikes‚ the superiority feeling employers had over employees and most importantly the lack of governmental support. Therefore the
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of this lab is to determine the rate of reaction under different circumstances. Different variables will be manipulated to discover their effects on a particular reaction. Changes in temperature‚ pH‚ and enzyme concentration are examples of factors that have the potential to affect the initial rate of an enzyme catalyzed reaction in a controlled experiment‚ whether it be speeding the reaction up or slowing it down. Part I of the experiment establishes a baseline that can be used to compare the results
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Introduction In my experiment I will be testing the differences of wood being soaked in rain and saltwater for a period of days. Then set out to dry to see if it had any change in width and weight. Question Does water affect the weight and appearance of wood over periods of time? Hypothesis I believe Red Oak will have the most change in weight in saltwater and the most change in appearance will be Pine in saltwater. Materials 1/3 8ft of Red oak 1/3 8ft of Yellow Pine 1/3 8ft of Treated
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A double displacement reaction is a type of chemical reaction in which two compounds react in order to create two new chemicals. The two cations and anions switch places with each other which forms two new compounds. As an example AB+CC can switch to AD+CB. Both sides of these equations must balance out in order to be neutral. So any pairs of compounds (such as A+B) must have a total balanced charge. In this example A could have a charge of positive 2 (+2) and B could have a charge of negative
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Assignment Lab Report Answer the questions below. When you have finished‚ submit this assignment to your teacher by the due date for full credit. (8 points) |Score | | | 1. For Part 2: Single-Displacement Reactions: For each of the four single-displacement reactions‚ describe what happened in each well. If a chemical reaction occurred‚ write a balanced equation for it. Then using the A‚ B symbols‚ write a general equation for a single-displacement reaction.
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Experiment 8 “Lipids” and the purpose of the lab is to become familiar with the properties and reactions of certain lipids called fats or oil. For this lab‚ students are testing the properties and reactions of lipids and soap will be prepared and its properties will be tested. To begin the experiment‚ place 5 mls of water‚ ethyl alcohol‚ chloroform‚ and toluene in to four clean test tubes and add 1 drops of cottonseed oil to each test tube. Shake it and record your observation. To do part B‚ in three test
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How fast is your reaction? Part 1 – How temperature affect the rate of reaction Chemical equation Magnesium + hydrochloric acid → magnesium chloride + hydrogen Mg + 2HCL → MgCl2 + H2 Graph Conclusion and questions 1. What factors/variables did you keep the same in this experiment? * We kept the same volume of hydrochloric acid (10 cm3) and the magnesium ribbon (5cm) because that way we could get a fair test experiment. We also repeated
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RESULTS AND CALCULATIONS Ligroin Toluene Ethanol H2O Anthracene Did not dissolve Slightly dissolved Did not dissolve Did not dissolve Benzoic acid Did not dissolve Dissolved Slightly dissolved Did not dissolve Phthalic acid Almost dissolved Almost dissolved Did not dissolve Dissolved Resorcinol Dissolved Dissolved Dissolved Dissolved Sodium naphthionate Did not dissolve Did not dissolve dissolved Dissolved Table 1. Results for the five compounds tested in four different solvents. Functional Group
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Temperature and Cofactors on Enzymatic Reactions “I pledge that no unauthorized assistance has been given or received in the completion of this work. Experiments described were performed by me and/or my lab group and this write-up is entirely my own creative work.” X________________________________________ Introduction Enzymes are protein molecules that speed up the rate of reactions by reducing the activation energy of a reaction. They act as catalysts in reactions‚ increasing the rate at which
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