HOW DOES THE SOLUBILITY OF POTASSIUM CHLORIDE (KCL) AND POTASSIUM IODIDE (KI) IN WATER VARY WITH TEMPERATURE? AIM To observe solubilities of KCl and KI with water at different temperatures To compare the two solubility curves and discuss what might vary the solubility of different ionic compounds. THE VARIABLES DEPENDENT VARIABLE Temperature INDEPENDENT VARIABLE Amount of solute (KCl‚ KI) CONSTANTS Amount of the solvent (water)‚ pressure APPARATUS 100G OF POTASSIUM CHLORIDE 100G
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An Experiment on Soil Analysis Jacob Pitcher and Derrick Gillespie Chemistry Lab 112 Section 02 4/02/2013 Abstract A sample of soil was tested for possible contaminants and other information using a variety of techniques including moisture analysis‚ pH measurement‚ acid-base titration‚ chloride-ion electrode analysis‚ and flame testing. The sample had a greater concentration of chloride ions‚ no measurable CaCo3 ‚ and lower than standard moisture content. It was contaminated with KCl and
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reacted with the nitric acid; heat the beaker to speed up the reaction. This reaction is represented by the equation: Cu (s) + 4 HNO3 (aq)  Cu(NO3)2+2NO2 (g) +2H2O (l) this reaction resulting in a blue liquid and brown gas that has the odor of chlorine. 2. For step two have a four hundred milliliter beaker filled with three hundred milliliters of ice water. Place the beaker from step one into the beaker with ice water. Twenty two milliliters of six molar sodium hydroxide will slowly be added
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table sugar is made up of sucrose molecules (remember covalent compounds from chemistry?)‚ table salt (sodium chloride) is a very different kind of chemical compound‚ an ionic compound. It is made up of two smaller particles‚ a sodium ion and a chlorine ion. Sodium chloride can be made in the laboratory (don’t try this at home!) by
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ACIDS‚ BASES AND SALTS 1. What are indicators? What are the different types of indicators? An indicator is a dye which changes colour when put into an acid or a base. The different kinds of indicators are- Natural indicators- Litmus is a natural indicator‚ litmus solution is a purple dye which is extracted from a plant called lichen. Litmus turns red in acidic solutions and blue in basic solutions. Other
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* The halogens can be found on the left-hand side of the noble gases. * These five toxic‚ non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F)‚ chlorine (Cl)‚ bromine (Br)‚ iodine (I)‚ and astatine (At). * Although astatine is radioactive and only has short-lived isotopes‚ it behaves similar to iodine and is often included in the halogen group. * Since the halogen elements have seven valence electrons‚ they only require one additional electron to form
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Water Treatment Plant Process- Chlorination or Ultraviolet Radiation By Shreya Shah Surface waters necessitate water treatment before consumption to guarantee no health risk is present to the user. Poor quality water which consists of dissolved and suspended particles‚ can impact and cause health risks to consumers. The most important contamination is the microbiological contamination as it leads to infectious diseases (Water Treatment‚ 1994). Chemicals such as nitrates and cyanide when contaminate
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Fluorine Properties - What are the Physical Properties of Fluorine? What are the Physical Properties of Fluorine? The Physical properties of Fluorine are the characteristics that can be observed withoutchanging the substance into another substance. Physical properties are usually those that can be observed using our senses such as color‚ luster‚ freezing point‚ boiling point‚ melting point‚ density‚ hardness and odor. The Physical Properties of Fluorine are as follows: What are the Physical
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CHM130 Lab 5 The Atomic Mass of Beanium Name: Paige Miller A. Data Table: Insert your Data Table here with your sample calculations. You must show at least one sample calculation per procedure step. (16 points) Part I Data Table Sample Mass (mg) Number/Qty Average Mass (mg) Relative Abundance Relative Weight (mg) Kidneybeanium 1660.00 mg 3 553.33 mg 0.2143 118.58 mg Pintobeanium 2830.00 mg 6 471.67 mg 0.4286 202.16 mg Blackeyedpeaium 1110.00 mg 5 222.00 mg
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w w ap eP m e tr .X w om .c s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *9505164189* 0653/03 COMBINED SCIENCE May/June 2007 Paper 3 (Extended) 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen
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