Date: 20/03/13 Flame Test – Investigating Compounds Aims To identify the presence of a relatively small amount (ie low concentration) of a metal ion in a compound. Method 1. Clean a platinum or nichrome wire by dipping it into concentrated hydrochloric acid. 2. Hold the platinum or nichrome wire at the hottest or blue part of a non-luminous Bunsen flame. 3. Repeat until the wire does not produce any colour in the flame (note: do not touch the wire‚ as salt in sweat will produce
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Lab: Flame Test Purpose: to determine the ID of 2 unknown substances Background Information: Every atom consists of a nucleus with tiny electrons whizzing around it. The further away from the nucleus they are‚ the more energy the electrons have. If a metal atom is heated‚ the electrons get enough energy to jump higher away from the nucleus‚ they become “excited”. When they fall back closer to the nucleus (back to their ground state)‚ they give off this extra energy as light. Why is the
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Investigate Flame Colors of Different Cations When they were heated by Fire. & Testing changes of cations using sodium hydroxide (NaOH) aqueous Aims & Objectives Different characteristic cations will form different colors when they are burned or added base. In these two experiments‚ scientist took some sample of barium hydroxide (Ba (OH) 2·H2O)‚ ferric chloride (FeCl3·6H2O)‚ copper chloride (CuCl2· 2H2O)‚ calcium chloride anhydrous (CaCl2)‚ potassium carbonate crystal (K2CO3· 2H2O)‚
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Purpose: To observe the characteristic colors produced when certain metallic ions are vaporized. Metallic Ion Color in Flame Na+ Light Orange K+ Pink / Orange Li Red Ca2+ Dark Orange Sr2+ Red Cu2 Green Co+2 Salmon Pink Ammonium Dichlorate Orange Sparks K2CR2O7 Orange Fe+1 No Reaction NaCl Orange Strantium Chloride Scarlet Red Ni+2 Dark Orange Copper Sulfate (solid) Green Fe+2
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Laboratory Report on the Reaction of Flames Towards Medals  Introduction The purpose of the flame lab was to identify a set of flame-test color standards for selected metal ions‚ relate the colors of a flame test to the behavior of excited electrons in a metal ion‚ observe spectral lines using diffraction grating‚ and to identify an unknown metal ion by using a flame test. My hypothesis for the lab was that most of the flames when sprayed with a solution will be a orange-red color. The
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Biochemistry‚ GRT1 Task 2 Essential Amino Acid Valine A1: 2 Characteristics of Valine • Valine is a nonpolar amino acid‚ with many carbons surrounded by hydrogen. Valine is unable to interact with water molecules‚ making it HYDROPHOBIC (MSDS‚ 2005). • Flammability- Valine is combustible at high temperatures. These products are carbon oxides and nitrogen oxides. In case of a small fire‚ dry chemical powder should be utilized. In case of a large fire‚ utilize water spray‚ fog or foam. No water
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Emission Spectra & Flame Tests Intro The emission spectrum is used in modern chemistry to help further studies of wavelengths and the spectrum. When a metal in a compound reacts in a flame and produces a color‚ it helps to show the strongest color in the emission spectrum. The purpose of performing these operations on the flame was to see how different metals would react. Using a spectroscope‚ it is possible to observe the line emission spectrum produced by sunlight‚ artificial light‚ and
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One (Flame Test) 1. Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame. Solutions Names Known 1 Barium Known 2 Calcium Known 3 Sodium Known 4 Rubidium Known 5 Potassium Known 6 Lithium Unknown 1 Sodium Unknown 2 Potassium 2. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did. The first unknown from part one from this virtual lab is Sodium
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information in Flame Tests‚ Atomic Spectra and Applications Activity) Introduction: Have you ever seen a fireworks display? Where do all of the colors come from? Below are some links to the chemistry of fireworks: http://chemistry.about.com/od/fireworkspyrotechnics/Fireworks_Pyrotechnics.htm http://alchemy.chem.uwm.edu/amalgamator/NCW/ncw2001/fireworks.html In this activity‚ you will investigate the colors of flame produced by solutions of metal salts. A flame test is a procedure
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Result of Observation Chemical name and symbol Physical appearance Cation of the compound Flame color NaNO3Sodium nitrate Colourless crystal Na+ Yellowish Orange NaClSodium chloride Colorless crystal Cl+ Yellowish Orange LiNO3Lithium nitrate Colorless crystal Li+ Red BaNO3Barium nitrate White crystal Ba² Bright yellow‚ lime yellow Sr(NO3) 2Strontium nitrate White crystal Sr² Dark red Cu(NO3)2Cupric nitrate Blue crystal Cu² Green‚ bluish green. Ca(NO3) 2Calcium nitrate White crystal Ca² Redish
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