Chemistry Midterm Essay Describe a major contribution to science made by each of the following scientists: John Dalton‚ (b) J. J. Thomson‚ (c) Robert Millikan‚ (d) Ernest Rutherford. John Dalton was a chemist and a meteorologist‚ with his notable achievements being leading the study on color blindness and modern atomic theory. Born in 1766‚ his later research on color blindness stemmed from his experience with the condition along with his brother. Along with this‚ what is now known as Dalton’s Law
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4/29/2013 5.1 Lab Report - Identification of Metallic Ions TITLE: LAB 5.1 IDENTIFICATION OF METALLIC IONS PURPOSE: In this lab we are learning how to observe and perform “flame tests”‚ of alkali and alkaline earth metal ions. We will use basic lab equipment provided in our Labpaq‚ and follow all safety precautions in this lab. From reading the discussion and review‚ we understand that the normal configuration of the electrons is called “the ground state”. We understand that they are
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of chemical properties. For example‚ the elements with atomic numbers 2‚ 10‚ 18‚ 36‚ 54‚ and 86 all are chemically inert (the noble gases)‚ while those with atomic numbers one greater 3‚ 11‚ 19‚ 37‚ 55‚ and 87 are all extremely reactive metals (the alkali metals). The rows or periods of the periodic table contain the elements with the same principle quantum number (n) for their outermost electrons. That is‚ until the fourth period‚ which contains the first row of transition metals‚ where the electrons
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WTHESIS STATEMENT: “BIOCONVERSION OF WATER HYACINTH (EICHHORNIA CRASSIPES) TO ETHANOL.” 1. INTRODUCTION Water hyacinth (Eichhornia crassipes) is a free-floating or rooted in mud plant or weed which can totally cover fresh water lakes‚ harbors‚ and other essentially relatively occluded fresh water bodies. It is a fast growing permanent aquatic plant that are extensively scattered all throughout the world. This tropical plant can be the reason for the infestation over large areas of water resources
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Magnesium + zinc sulphate = magnesium sulphate + zinc Double displacement is the swapping of elements‚ usually forming a solid. Eg. Lead nitrate + sodium chloride = sodium nitrate + lead chloride Neutralization is the reaction between an acid and alkali/base/carbonate . One example of neutralization is Sulphuric acid + magnesium oxide = magnesium sulphate + water Sodium hydroxide is a corrosive metallic base‚ and it is also called caustic soda. Nowadays‚ it is made along with hydrogen and chlorine
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1ml of 5% glucose and 0.5ml of concentrated NaOH. Boil and note the change of color and odor produced. Do the same with 5% galactose‚ maltose‚ fructose‚ lactose‚ sucrose‚ glycogen and starch. | When a solution of reducing sugar is heated with an alkali (NaOH)‚ it turns yellow to orange and finally dark brown‚ liberating the odor of caramel. This is due to the liberation of
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commerce‚ general social life (Alkali “Feminity‚ Transcendance...”159). In line with this argument‚ Alkali agrees with Mba’s argument that “The likes of Queen Amina of Zazzau‚ Moremi of Ile-Ife‚ Inikpi of Igala‚ Daurama of Daura and Nana Asmau Dan Fodio were not only wives‚ mothers and princesses but military generals‚ diplomats‚ teachers‚ merchants‚ warriors‚ political and religious leaders” (162). In view of this assertion‚ it has become impossible for Alkali to write from the perspective of
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2HCl ==> 2NACl + H2O + CO2 The titration that took place was Acid and Alkali reaction as sodium carbonate in a solution becomes an alkali. Acids are substances that produce hydrogen ions in solution and bases are substances which produce hydroxide ions in solution. HCl is an acid because it produces H+ ions when in solution‚ for example‚ a neutralisation titration this also make it a proton donor. Na2CO3 is a base and an alkali as it is in solution and produce OH- ions due to the distilled water used
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produced‚ * working under vacuum * Use electric heaters to heat the receptacles with flammable substances. Do not expose them to an open flame. * Wear protective gloves and safety glasses while working with concentrated acids or alkalis‚ or whenever the mixture might react quickly and aggressively. * In case a chemical comes in contact with your skin‚ immediately rinse the spot with water and neutralize if necessary. Remove the affected clothing. In case a chemical comes in
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J B Aitkin‚ Widnes 1. 2pp. typed notes on company processes 2. Site plan 1916 3. Site plan 1939 4. Extract from Widnes weekly news of death of J. B. Aitkin 1934 5. Sketch of works muriate (ammonium chloride) plant 1916 6. Information on titles to land Albright and Wilson‚ Oldbury 1. Report on visit to works by museum staff 1986 2. Letter regarding 1. 3. Reprint Chem. And Ind. August 31st 1963 regarding Research Department 4. Job assessment scheme at works 1969 5. Sales leaflet /
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