NAME : Hoàng Lê Sơn EXPERIMENT 1: CHEMICAL REACTIONS I. INTRODUCTION – OBJECTIVES In this first experiment‚ we will perform 8 chemical reactions and 1 flame test in order to determine 2 things : a) firstly‚ we can know whether a reaction occurred or not. To complete our mission‚ we need to observe carefully some signs of chemical reaction’s appearance such as the change in color of solution‚ precipitate’s existence‚ the release of gas‚ also check the change of heat and light. b) secondly
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scientists conducted gruesome experiments on the prisoners at various concentration camps including Dachau and Ravensbrook. In addition to attempting to wipe out the Jewish population‚ the Nazis brutally mutilated many prisoners at the concentration camps without their consent in the name of science and medical advancement. During World War Two‚ the Nazis performed inhumane medical experiments on prisoners at these camps such as freezing them to death‚ genetic testing‚ experiments on intentionally inflicted
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The Twin Experiments was conducted by Josef Mengele‚ during World War 2 in Auschwitz. Dr. Mengle was a medical researcher who was fascinated with twins in specific. From the three thousand children that would be pulled from the masses of people upon arriving only about 200 survived. Age didn’t matter‚ yet most were children‚ and if they were really young their mother would be allowed to stay with them. The twins recieved "special" treatmeant as they were allowed to keep their hair and clothes. A
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Experiment 4A – Counting Atoms in a Chemical Reaction Purpose: The purpose of this lab is to create an experiment where zinc reacts with hydrochloric acid in order to find out the number of moles and atoms of zinc reacted. This can be accomplished by weighing the sample before and after the reaction with hydrochloric acid. Data: Material Mass in grams (g) Initial mass of dry beaker 49.37 Initial mass of dry beaker + zinc 51.03 Initial mass of zinc 1.66 Final mass
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Performed: 02/05/2013 Submitted: 02/06/2013 Section 1: Title Physical and Chemical Properties Section 2: Purpose This labs is intended to help me investigate chemical and physical properties of pure substances. Section 3: Procedure In this experiment‚ I observed substances in their natural state‚ and recorded their apparent physical properties. I then tested the substances to determine how they react when their natural environments were altered. The pure substances were tested to see
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report I will discuss what I did as an experiment and what I hope for it to achieve. Firstly I carried out an experiment to assay the effectiveness that a range of disinfectants have on the growth of ecoli and whether or not it can prevent it from growing. From the experiment i should be able to see that some disinfectants have a greater effect than others do. From this I shall then draw a conclusion and evaluation on what was the most effective‚ and could there have been any contributing factors as
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creating a school that could change the world. The Bauhaus was evolutionary. It became one of the most influential modern art school of the 20th century as Gropius focused on bringing all creative people together in one school with a different teaching way then there was at the time as they centered their interest in understanding art’s relationship to the world’s society at the time along with technology. This caused the school to achieve something different to any other art school as The Bauhaus
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The purpose of this experiment was to test the tonicity of potato cells. The potato cells were placed in different test tubes with water and were left there for 15 minutes. The percent change in mass is then used to determine if the cells lost or gained water‚ therefore determining the tonicity of the cell. Although it was a brief short time‚ the final results showed that the more water the potatoes were placed in‚ the more hypotonic the potato becomes. Tonicity is stated to be the state of a solution
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Don’t go around saying the world owes you a living. The world owes you nothing. It was here first. I have never let my schooling interfere with my education. Get your facts first then you can distort them as much as you like. ~Mark Twain. In The Adventures of Tom Sawyer‚ the main character Tom Sawyer changes throughout the book. Like Tom Sawyer‚ I have also changed academically and socially throughout seventh grade. The main character Tom Sawyer changed throughout the book. He came more thoughtful
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Eggs are a key ingredient used to make a foam. Investigate the functional and chemical properties of eggs and other ingredients when making meringue. Chemical and Functional properties of eggs: Background information Eggs give a smoother texture to microwaveable dishes‚ frozen dishes are better to freeze. The yolk and the egg white cam be used in many different ways for different products of food. Eggs contain a lot of protein and a balance of other nutrition. Some producers require fresh eggs to
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