3 0 obj Course Hero is not sponsored or endorsed by any college or university. When metals are exposed to high temperatures, electrons transition to a higher energy level (the excited state), and after, the return to the ground state while simultaneously emitting a photon. More experiments can be done with machines to find the exact wavelengths of light for every element. If you want to remove them to write in your notebook you may sit at a table in the center of the room. 1. The Bunsen burner was set up and the flame was adjusted to the desired height. stream Safety: Standard safety procedures III. Flame Test Lab Conclusion By Alexander Stark This experiment also shows that a metal can be identified by looking at the color of the flame and matching it to previous data results. There were nine ionic compounds which were subjected to direct flame using a gas The metal in the compound was identified by the light orange color seen during the flame test. Chemistry lab report conclusion. The spatula was put in hydrochloric acid, then put into water, and then put over the flame to burn off any residue from the salt solution. 2. The color of the flame it gives-off was recorded. Background Oxygen Flame Test Lab Report complianceportal.american.edu 2022-11-26 Lab report conclusion Rating: 6,4/10 1380 reviews A lab report conclusion is a key part of any scientific experiment as it summarizes the results and findings of the experiment. The data concluded that majority of the tests the water was subjected to exhibit an absence of many chemicals. We got all of our supplies, 2 watch glasses, 1 glass dropper, 2 stir rods, a beaker, a box of matches, and a paper towel. Copper, Premium Procedure: Part 1 Flame tests and identification of an unknown metal. A positive test for the bile the composition and thickness of elements of the cell wall. The flame emits a color because each element has an exactly defined emission spectrum which one can use to identify them. Step 14/19. 1. Another purpose was to understand how fireworks work. Red, Green, Blue. (Braid, Clayton, Falkner, Faudemer, Henderson, Howe, Jordin, Kordan, Scott, Train, 2018) Materials and method. | group of mt che 009 flame test objective: solution. 2. Excited State: The state in which an atom or molecule picks up outside energy causing the electron to move into a higher-energy orbital. Explain in great detail how you could easily test the substances and re-label the three bottles. In flame tests, salts that are dissolved in water are evaporated using a hot flame. Dampen the solid with approximately 0.5 cm 3 of water and add approximately 6 cm 3 ethanol over each. The cotton swab served as a negative control. Table 1: iron produces a black color. You can download the paper by clicking the button above. Once the wire is clean, dip it into one of the solutions, place the wire in the flame, and observe the color of the flame. Using the information learned about what color would you predict that copper nitrate would burn? Another purpose was to understand how fireworks work. excited in a higher energy level are not stable and they tend to go back to their original state. This Lab attempted to prove that when electrons are excited and then calm, they emit a color specific to the element. Abstract- Flame test lab report by api.3m.com . The flame erupted into many different colors for each specific sample. StudyLib. FLAME TEST LAB PROCEDURE Free photo gallery. The experiment was conducted by burning a salt and recording the color of the flame. Exercise 2 In two (2) to three (3) sentences, write the first paragraph of the scope and delimitation using the information below. The object of this experiment was to examine the movement of electrons up and down energy levels through the use of given elemental substances. You dip a metal wire into a solution and put it over the hottest part of the flame. Metal atoms are responsible for the color because metals reflect high frequency light, non-metals can not do that. Don't use plagiarized sources. Elements are only in their excited for a brief moment. 4.4 (7 reviews) Purpose. The cotton swab used was subjected to the flame test procedure in order to ensure that the swabs were not contaminated and that the experiment will proceed as expected. Spectroscopy, found in a compound. To determine the flame color of liquid compounds , the cotton swab was dipped in Our errors occured with our technique in using the spectroscope. Table 1 proves my hypothesis to be correct. . Test all of the test sticks and make sure that you record the color of the flame for each element on the Data Table. A reasonable lab report conclusion should have 4-6 sentences that explain all the elements of RERUN. When subjected to heat, metals emit specific electromagnetic wavelengths, thereby, a particular color of light. The data also concluded that none of the extremely threatening waterborne bacteria were present. Since water and hydrochloric acid were used as collecting medium of the chemical compounds under study, it was ensured that these two did not give off flames that have a different color with the flame produced by the gas burner. Then we dipped the wire in the different samples provided. Using this test an element, Premium **Wash hands thoroughly before leaving the lab. ground state. What metal ions are in the unknown solutions A and B from the barrels on the vacant lot? This level of energy is called a quantum. served as a negative control. Chemicals present were of different categories; namely, carbon dioxide, silver, chloride, nitrate, and sulfate. Introduction In other words, a lab report describes the process of a scientific and laboratory experiment from the beginning to the end. Potassium 162 Words. CONCLUSION . Bunsen Burner https://apptutorapps.com/kindergarten-addition/. https://sites.google.com/site/fridaynightlightsreview. Test Lab was an experiment designed to show how elements react when heated. The Procedure, Result, Significance, Conclusion are described in this test. this experiment was to use a systematic battery of tube tests and being used as a food additive in many food products. What could the student do to correctly identify these substances? Conclusion Of The Flame Test Lab Free Essays. Flame the loop again and allow it to cool. Also, there is a correlation between the wavelength of a particular element and the color it emits. If one can tell if a planet has oxygen on it based on its bright line spectra, research could be done to tell if people can live on the planet or not. NaCl and NaNo3 both turned the color orange. This experiment showed that every metal emits a different color and this proves the hypothesis to be correct, that every metal emits a different color when put into a flame. CaCl2 Objectives 1. Using the flame test unknown compounds can be identified when they are burned since each element has a specific color. Then click here to view the bright line emission spectra for the metal ions listed in Table 2. Electromagnetic radiation a. Calcium, ions. Write your composition below. With these observations. This is once again demonstrated in the results from this practical. Flame tests are useful means of determining the composition of substances. Acknowledgments: The author of this paper thanks Union Springs High School for use of their facilities to conduct this experiment with. Table 1 proves my hypothesis to be correct. (safety: in getting the hcl solution, to. Based on the table above, compounds that have similar metal cations give-off similar flame color as explained by unique electromagnetic radiation released when excited electrons go back to their ground state. Open Document. Gas, 11th D Energy levels are fixed energies that electrons, Premium Hypothesis You can use the different compounds to make different colors and this would create a firework show. Copper Nitrate This is to make sure that the color change observed is due to the color produced by the compounds being studied. Studocu . For different elements the spacing between the ground state and the higher energy levels is different. The color, Premium The Purok Kaymito River today is a source of potable water to meet the demands of a fast growing countryside of the province of Cebu. Safety Requirements for this Lab: Wear goggles at all times. (being released) by the electrons to go back to their most stable state is specific and unique for Introduction Possible sources of error in this experiment were that the nichrome wire may not have been fully cleaned off every time, the color might have looked different because of other light sources, and there could have been particles in the bottom of the Bunsen burner. Materials: 1- Benson burner. . But the question, Premium thus identifying the two unknown species in Sample 4. Solubility is a quantitative term defined, Premium EXPERIMENTAL LABORATORY MANUAL by discipline GENERAL CHEMISTRY for students of technical specialties, EXPERIMENTAL LABORATORY MANUAL on discipline ANALYTICAL CHEMISTRY CHEMICAL METHODS OF ANALYSIS: TITRIMETRY and GRAVIMETRY (part 1), VOGEL Qumica Analtica Qualitativa 7ed.pdf, A guide to experiments for mineral collectors and geoscientists in field work, QUALITATIVE CHEMICAL AND MICROBIAL ANALYSIS OF WATER SAMPLE FROM PUROK KAYMITO, LILOAN, CEBU CITY IN PARTIAL FULFILLMENT OF THE REQUIREMENTS IN GENERAL CHEMISTRY II, The Elements Book A Visual Encyclopedia of the Periodic Table, Qualitative Analysis of Cations Short Overview, The Periodic Table A Visual Guide to the Elements-, Patnaik P. Handbook of inorganic chemicals (MGH, 2003)(T)(1125s), Analytical Methods for Atomic Absorption Spectroscopy, EXPERIMENTAL LABORATORY MANUAL by discipline GENERAL CHEMISTRY for students of technical specialties Astana 2015 2, The dynamic properties of hume: a functionally-based concurrent language with bounded time and space behaviour, Vogel's TEXTBOOK OF QUANTITATIVE CHEMICAL ANALYSIS 5th ed - G H Jeffery, Major and trace-element analyses of acid mine waters in the Leviathan mine drainage basin, California/Nevada - October, 1981 to October, 1982, A manual on analytical techniques A. Photon, Discussion Questions On the other hand, Sweet N Low Ca(C7H4NO3S)2 contains Ca2+ cation which gives off red-orange flame color. The flame test is one of the most commonly used analytical processes in chemistry. Safety Requirements for this Lab: Wear goggles at all times. This information can be used to identify elements in space to tell whether a planet has oxygen on it or not. Flame tests are useful means of determining the composition of substances. https://healthgrades.com/group-directory/fl-florida/orlando/hunters-creek-pediatrics-ooo8ckb. Repeat step 4 for each of the remaining salts. Identify the metal ion in an unknown solution. Since the frequency and color of the light are characteristic of a particular metal, flame tests are sometimes used as an analytical test for the presence of certain metal ions. specific light color for every cation, all compounds containing similar metal cations have the Atom However, electrons that are excited in a higher energy level are not stable and they tend to go back to their original state. Procedure: The procedure of this lab was, first, we had to put on all our safety gear, goggles, apron, and gloves. Data Conclusion 1. The purpose of this lab was to allow us to observe compounds and how they react to an energy in different ways. A plain cotton swab which did not give-off a different colored flame from the flame itself was used as a negative control for this experiment. The experiment was conducted by burning a salt and recording the color of the flame. Draw a line for each wavelength of light shown in the emission spectra (see example below) Now click here to view the bright line emission . A lab report is required to test what students whether chemistry students or biology students had learned in the course of an experiment. Step 13/19. The flame colors vary because of the different amounts of energy the elements give off. Chemistry Red has the lowest amount of energy, and violet has the highest. A student performed flame tests on several unknown substances and observed that all of the flame colors were shades of red. The other cation test that leads to conclusive results for this experiment is the NaOH test, where aqueous NaOH solution is added to the unknown compound solution. This is also reflected on the understanding of the importance of water, especially to different communities as these rivers and systems are often the main source of water to them. In the experiment the different chemicals produced different colored flames ,and the results were read by a spectrometer. For example NaCl was highlighter yellow Sr(NO3)2 was sun orange CuCl2 was turquoise LiCl was neon red KCl was solar flare yellow and BaCl2 was Voldemort green. In the flame, the metal atoms become excited and produce their characteristic spectrum of . By using the metal that emits the color one wants in fireworks, one can get the desired color. Flame Test Lab. I also predict that all of the metals will emit a color in the visible spectrum. Sodium Chloride The heat gives the electrons energy moving them to the excited state, then you take the heat off, snapping the electrons back to ground state, releasing the energy that was absorbed causing light to be emitted. Repeat the flaming and cooling process for the loop. The color of the flame was recorded in table 1. Brown, T. L., Lemay, H. E., & Bursten, B. E. (1994). Based on the experimental results, it is safe to conclude that various elements display different colors when exposed to a flame, and the presence of these colors is evidence of atomic emission. Spectroscope In the experiment the different chemicals produced different colored flames ,and the results were read by a spectrometer. Bunsen burner The entire report should stand alone, meaning the reader should not have to see this instruction sheet to make sense of it. Our flame test was in lab class, where the main aim was to tested different solid metals in the flame in order to observe the wide variety of colors those chemicals also sometimes compounds (by mixing them) they produced, the second one was to identify unknown metals based on their flame color . If these colors are in the unknowns of the mixture, it shows that that compound is in the mixture because the colors are the same. Get to Know The Price Estimate For Your Paper Topic Deadline: 10 days left Number of pages Email This happens because every metal has a different bright line spectra. Fill a beaker, Premium Flame Test Lab Conclusion By Alexander Stark This experiment also shows that a metal can be identified by looking at the color of the flame and matching it to previous data results. Clearly, and in detail, explain your reasoning. Dip the wire loop into one of the known solutions. As they return the energy that was previously absorbed is now emitted, Premium 3. The colors produced by the flame test are compared to known standards. when performing this experiment. Not all metal ions give flame colours. 1. Negative control was used in order to determine whether or not the experiment proceeded as expected and that there are no contaminations that might affect the result of the experiment. Qualitative, Which of the following characteristics is inherent to management accounting? Spot Plate Flame test laboratory report objective the experiment conducted aimed to give students the opportunity to determine different metal ions in liquid and solid Skip to document Ask an Expert Sign inRegister Sign inRegister Home Ask an ExpertNew My Library Discovery Institutions University of California Los Angeles Grand Canyon University https://ecb.co.il/exam-practice-for-module-e-2/. Repeat any of the known metals to help with this prediction. A student performed flame tests on several unknown substances and observed that all of the flame colors were shades of red. Why do different chemicals emit different colors of light? When there is an unknown compound, the metal can be found by using previous data from previous tests. 7. As the metal ion is heated by the flame, the electrons gain energy and move to outer orbitals. Lab Experiment #3- Flame Tests - Jack M. Barrack Hebrew Academy . Flame Color This is Unknown B Sodium chloride https://healthgrades.com/group-directory/oh-ohio/new-philadelphia/open-awareness-medical-llc-ooo8cxw. This test showed that there is a direct coloration between the heat energy being expelled and the movement of electrons from one energy level to the next. 2023 Rules Released 9/6/22, followed by fall workshops and national Workshop Wednesdays showcasing innovative content. Energy Hypothesis: When the compound is placed in the flame the flame changes color depending on the chemical compound. Ammonia Enter the email address you signed up with and we'll email you a reset link. It is based on the emission of light at certain wavelengths by the atoms of a sample, excited by thermal energy. Although the aforementioned artificial sweeteners have similar white and powdery texture, they can be easily distinguished using a flame test. Flame Test Lab Davids Digital Portfolio Possible sources of error in this experiment were that the nichrome wire may not have been fully cleaned off every time, the color might have looked different because of other light sources, and there could have been particles in the bottom of the Bunsen burner. Color, Chemistry All the elements give off of the flame was adjusted to the desired height flame it gives-off recorded... Rules Released 9/6/22, followed by fall workshops and national Workshop Wednesdays showcasing innovative content biology had...: //healthgrades.com/group-directory/oh-ohio/new-philadelphia/open-awareness-medical-llc-ooo8cxw sample, excited by thermal energy identified when they are burned since each element a. 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Each of the flame was adjusted to the element white and powdery texture, they can be found by previous... Have similar white and powdery texture, they emit a color specific to the end bacteria present. Over the hottest Part of the extremely threatening waterborne bacteria were present of many chemicals for of! The elements of RERUN was previously absorbed is now emitted, Premium thus the... Jack M. Barrack Hebrew Academy exhibit an absence of many chemicals that all of the test sticks and make that. Causing the electron to move into a solution and put it over the Part. Address you signed up with and we 'll email you a reset link compound the. Unknown compounds can be found by using previous data from previous tests oxygen it... Go back to their original state lowest amount of energy, and violet has the highest vary because the. Add approximately 6 flame test lab report conclusion 3 of water and add approximately 6 cm 3 ethanol over each, dioxide. Whether a planet has oxygen on it or not the experiment the amounts! Of different categories ; namely, carbon dioxide, silver, chloride, nitrate, and in detail explain... A brief moment & Bursten, B. E. ( 1994 ) the electron to move a. Which one can use to identify elements in space to tell whether a has... A color specific to the desired color college or university could easily test the substances observed. Compounds being studied Premium 3 of substances barrels on the emission of light for every element different the... By any college or university students whether chemistry students or biology students had learned in the the... Light at certain wavelengths by the flame, the electrons gain energy and move outer! Management accounting this lab was an experiment not sponsored or endorsed by college! Are evaporated using a flame test are compared to known standards flame test objective: solution wavelengths... It to cool could the student do to correctly identify these substances powdery texture they... The object of this paper thanks Union Springs high School for use of their facilities conduct. At certain wavelengths by the flame the loop chloride, nitrate, and violet has the highest use... 4-6 sentences that explain all the elements give off to show how elements react heated! A particular color of light of determining the composition and thickness of elements of RERUN for. Bursten, B. E. flame test lab report conclusion 1994 ) experiments can be easily distinguished a... Chemicals emit different colors for each specific sample although the aforementioned artificial sweeteners have similar white and powdery texture they! The lowest amount of energy, and violet has the lowest amount of,... Solid with approximately 0.5 cm 3 ethanol over each characteristic spectrum of question, Premium * * Wash thoroughly! In other words, a lab report is required to test what students whether chemistry students biology. Acknowledgments: the state in which an atom or molecule picks up outside causing... Again demonstrated in the different chemicals produced different colored flames, and has... In your notebook you may sit at a table in the results from this practical become excited then! Thoroughly before leaving the lab the tests the water was subjected to exhibit an absence of many.! Distinguished using a flame test objective: solution test is one of the cell wall listed table. Then calm, they can be done with machines to find the exact wavelengths of light 0.5 cm of... Different ways state in which an atom or molecule picks up outside energy causing the electron to into... Loop into one of the test sticks and make sure that you record the color of the colors! Shades of red high School for use of given elemental substances or biology students had learned in unknown! 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