The Elizabethan Era Medicine and Alchemy The medicinal practices and problems of the Elizabethan Era were very important to the people‚ although they are very different from those of today. There were many different beliefs and diseases‚ like the Plague. Medicine was not an exact science and was related to Alchemy (Chemistry). Here‚ some of the many practices and beliefs of the Elizabethan Era will be discussed. One of the most widely known and important of the beliefs was the humours. It
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TITLE: THE EFFECT OF HEATING DIFFERENT SUBSTANCES INTRODUCTION: In this exercise‚ it was required to observe carefully what happened when certain substances were heated in a burner‚ and to note the appearance of the residue after heating. AIM: To observe the effects of heating different substances. MATERIALS: Hard glass test tubes Powered samples of Lead (II) nitrate Copper (II) sulphate Ammonium chloride Zinc sulphate Basic copper (II) carbonate‚ CuCO3. Cu(OH)2
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Test Booklet Code - NO.: ABC 2216302 This Booklet contains 20 pages. Do not open this Test Booklet until you are asked to do so. Impoutant Instructions : 1. 2. The Answer Sheet is inside this Test Booklet. When you are directed to open the Test Booklet‚ take out the Answer Sheet and fill in the particulars on side-1 and side-2 carefully with blue/ black ball point pen only. The test is of 3 hours duration and Test Booklet contains 180 questions. Each question carries 4 marks
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Rules for Naming and Writing Compounds I. Ionic Bonds • bonding between a metal and non-metal or the bond between a positive ion and a negative ion forming a binary compound. • end in the suffix "ide" • Or bonding between a metal and a complex ion. Steps in writing formulas: • • • • Use a periodic table of elements and of ions. Write the symbol and charge of the cation first (positive ion) Write the symbol and charge of the anion next (negative ion) Use criss-cross rule to balance for an electrically
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A Sequence of Chemical Reactions: Transforming Copper Briefly describe. a) Why must you carry out the oxidation of Cu with HNO3 in a fume hood? Concentrated nitric acid is a toxic oxidant. Avoiding skin contact or inhalation is highly important. The reaction between Cu and HNO3 produces NO2‚ a toxic brown gas; therefore working under the fume is necessary in order to prevent inhaling the toxic gas. b) Why you should be particularly careful when you work with 3 M H2SO4 solution? Sulfuric acid
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9/25/13 Endothermic Reaction Lab Report The Effect Ammonium Nitrate has on the Temperature of Water During this lab students are going to mix water and ammonium nitrate one gram at a time and observe the change in temperature that is occurring. The students are then going to record the data on a table and later will be able to make a graph of the results. A hypothesis for this lab could be if ammonium nitrate is added to water then the water temperature will decrease. . Hypothesis: If
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Example lab report of Synthesis of potassium tris (oxalato) ferrate (III) trihydrate Posted by Nurul Yunaliyana Experiment 5: Synthesis of potassium tris (oxalato) ferrate (III) trihydrate Purpose: to synthesis potassium tris (oxalato) ferrate (III) trihydrate ‚K3 [Fe (C2O4)3].3H2O. Introduction: Ferrous ammonium sulfate‚ Fe(NH4)2(SO4)2.6H2O is dissolved in a slightly acid solution‚ excess oxalic acid‚ H2C2O4‚ is added and the following reaction takes place: Fe(NH4)2(SO4)2.6H2O + H2C3O4
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1. In Volume 2 (the Alphabetical Index)‚ the main term “Diaper rash” directs you to refer to this code in the Tabular List (Volume 1): ____691.0_______________ 2. To assign a code for a poisoning or adverse effect‚ you would refer to this table: _Table E Chapter 17____________________ 3. A diagnosis for a condition or disease of the Respiratory System would fall within this code range: __519.9______________ 4. These types of codes are used to identify “Factors Influencing Health Status and Contact
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Polyatomic Ions.table List of Polyatomic Ions that Must be Memorized for General Chemistry Polyatomic Cation: NH4+ ammonium ion Polyatomic Anions Ionic Charge: Oxyanions: ClO4– perchlorate ion ClO3– chlorate ion – ClO2 chlorite ion ClO– hypochlorite ion -1 Ionic Charge: Oxyanions that Contain Hydrogen: HCO3– bicarbonate ion or hydrogen carbonate ion HSO4– bisulfate ion or hydrogen sulfate ion NO3– NO2– nitrate ion nitrite ion MnO4– permanganate ion
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Ap Chem. Period 7 9/14/2014 Analysis of Silver in an Alloy Purpose- To determine silver content of an alloy and to calculate the percent silver in the alloy. Materials Chemicals •Silver-Copper Alloy •Nitric Acid (NHO3) •Baking Soda (NaHCO3)(s) •Sodium Chloride (NaCl)(s) Equipment •Beakers‚ 100 and 250 mL •Filter Flask and Walter’s adapter •Stirring Rod •Wash Bottle •Watch Glass •Crucible Tongs •Ring Stand‚ Ring‚ Wire gauze •Bunsen Burner •Graduated Cylinder •Rubber or Plastic
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