| The Occurrence of Osmosis and Diffusion in Artificial and Living Cells | David Michael | March 24‚ 2011 | Partners: Fady Guirguis‚ Klaus Blandon‚ and Mauricio Rodriquez. | | * Table of Contents I. Abstract 3 II. Introduction 4 III. Materials and Methods 9 IV. Results 15 V. Discussion 18 VI. Works Cited 23 * Abstract This lab focuses on the understanding of osmosis and diffusion in a practical sense. It allows the conductor to see what factors affect diffusion
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AIM: To outline what a precipitation reaction is‚ describe ways which one can predict whether a precipitation reaction would form or not‚ describe the uses of precipitation reactions in everyday activities and industries BACKGROUND INFORMATION: Precipitation is the formation of a solid in a solution during a chemical reaction‚ such as evaporation. A substance that causes precipitation when it is added to a solution is called a precipitant. This can occur when an insoluble substance is formed in
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‘‘Wavelength‚ Frequency‚ Energy and Flame Color Produced by Different Metals’’ Period 8 October 30th 2013 October 24th 2013 Sosa #2 ABSTRACT: The purpose of this project was to identify the different flame colors that the different metals release‚ compare the flame colors with wavelength‚ compare the wavelength of different flames to their frequencies and energies‚ explain how the flames colors were produced‚ compare and contrast the results obtained in the lab with regard
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(°C) Final Temp. (°C) Endothermic/ Exothermic Sodium Hydroxide NaOH 16.5 19.8 Exothermic Ammonium Chloride NH4Cl 15.5 Endothermic Sodium Acetate NaCH3COO 16.2 Slightly endothermic Sodium Chloride NaCl 16.5 Neither Part B Ammonium Chloride and Barium Hydroxide Equipment and procedures (In book) Results (observations) A white solid forms in the bottom of the test tube after vigorous shaking; the lowest temperature recorded was 9°C. Part C Iron and Copper(II) Sulfate Equipment and procedures (In
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How ever hard it seems always remain subsistent and take control of your day headstrong‚ and never worry about the millions of things you don’t have....live in the spectacular NOW.... People believe that trouble is far away but it is here to stay and cannot be redirected any way that you may wish Net ionic equations are equations that show only the soluble‚ strong electrolytes reacting (these are represented as ions) and omit the spectator ions‚ which go through the reaction unchanged. When
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combined with Co(NO3)2 or cobalt nitrate. Furthermore‚ most copper and iron nitrates‚ even with differing sodium compounds produced a precipitate. Exceptions were Cu(NO3)2 with sodium sulfate and sodium chloride. It was also noticed that nickel‚ barium‚ and iron nitrates (excluding those with few with no reaction) across the board had the same color precipitates no matter the sodium compound that it was mixed with.
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Stazi Belvin Chemical and Physical Lab Changes Lab Report 9/5/2014 I. Purpose- The overall purpose of the lab is to identify chemical and physical changes. II. Safety- To work with the chemicals used in the lab‚ it is required to wear safety goggles to protect your eyes from the fumes when working with the chemicals. It is also required to be cautious when working with the acids used in this lab because they can cause burning and irritation of the skin. Also‚ be cautious as to not inhale the
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be displayed in the highlighted column.( by Bronwyn J. Nelson‚ Fairfield High School‚ Fairfield‚ Ohio.) 1. More outer electrons: Phosphorus or silicon? 2. Liquid at room temperature: cobalt or mercury? 3. Produces a yellow flame test: barium or sodium? 4. Can be cut with a knife: dysprosium or chromium? 5. Part of the lanthanide series: cerium or thorium? 6. Larger atoms: carbon or fluorine? 7. Very high ionization energy: krypton or potassium? 8. Configuration ending
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21) Rb2O 22) CaI2 23) Cs2O 24) MgI2 25) LiCl 26) BeBr2 27) Na2O 28) CaF2 29) BP 30) Al2O3 1) magnesium sulfide 2) potassium bromide 3) barium nitride 4) aluminum oxide 5) sodium iodide 6) strontium fluoride 7) lithium sulfide 8) radium chloride 9) calcium oxide 10) aluminum phosphide 11) potassium sulfide 12) lithium bromide 13) strontium phosphide 14) barium chloride 15) sodium bromide 16) magnesium fluoride 17) sodium oxide 18) strontium sulfide 19) boron nitride 20) aluminum nitride 21)
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Chemical Formulas Review: Nomenclature and Formula Writing Naming Simple Compounds There are four naming systems you should familiarize yourself with to succeed on the SAT II Chemistry exam. The trick is recognizing which naming system to use. Here are the guidelines: * If the compound starts with H‚ it is an acid. Use the naming acids rules. * If the compound starts with C and contains quite a few H’s and perhaps some O’s‚ it is organic. Use the naming organic compounds rules. *
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