Lab Report: Flame Test Essay by thebeckita , High School, 11th grade , January 2006 download word file , 2 pages download word file , 2 pages 0.0 0 votes The heat of the flame excites the electrons of the metals ions, causing them to emit visible light. Definition. This also proves my hypothesis to be correct. GOOD LABORATORY PRACTICES (GLP, Flame Atomic Absorption Spectrometry Analytical Methods, Analytical Chemistry for Technicians Third Edition, PRECISE ADVANCED LEVEL CHEMISTRY PRACTICAL GUIDE, MUKHANBETOVA NAZIRA EXPERIMENTAL LABORATORY MANUAL on discipline ANALYTICAL CHEMISTRY CHEMICAL METHODS OF ANALYSIS: TITRIMETRY and GRAVIMETRY (part 1) for the students of technical specialities, Jhemical Experiment!' Photon, Discussion Questions Ace-K KC3H4NO4S contains K+ cation which gives off lilac or light purple flame. But the question, Premium The electrical charges have to add to zero. The flame test is conducted by using fire to observe the light given off by an element's electrons as they go from an excited state to their ground state.When electrons are exposed to certain conditions such as heat, they may increase in energy level and move into a higher energy level in a phenomenon known as being "excited." Note that your answers will be graded according to the rubric provided.. Flame test lab report conclusion. It will also show that flame tests can be used to make certain colored fireworks. Metal PROCEDURE: Step 1 For each cation to be tested there will be a pair of test tubes. https://shipseducation.com/training/test-answers/. back to their ground state. Conclusion- The purpose of this lab was to see what colors are characteristic of particular metallic ions in a flame test and use their characteristic color to identify other elements. Alkaline earth metal CuCl2 Metal With these observations, it can be concluded that the cations are the ones responsible for the unique flame color of the compounds. 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. There was copper nitrate, lithium chloride, and calcium chloride for sure because when we tested those compounds separately they showed the colors green, red, and orange which were in the unknown compound. The chemical may not have been 100% pure or there may have been an inconsistency in the chemical. Keep goggles on at all times when working on lab. 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. Flame Test Lab Report Our. Solubility is a quantitative term defined Premium Alkaline earth metal Metal Calcium What about compounds containing the K+ cation? Observe and record the color of the flame for each metal ion. excited in a higher energy level are not stable and they tend to go back to their original state. Procedure: All alkaline earth metals except beryllium and magnesium impart colored flames. 2023 Rules Released 9/6/22, followed by fall workshops and national Workshop Wednesdays showcasing innovative content. The compounds were CaCO3, CaCl2, KC4H5O6, MgSO4, CaSO4, NaCl, KCl, NaPO4, NaCO3. These exited electron then return to a lower . Experiment #1: Flame Test banawis hjc, baluyot kje, bullo pvgd. Results and Discussion- The data in table 1 shows that every metal tested emits a different color during a flame test. Compliance to GAAP C. contribution approach income statement D. External users, Problem 5 - 35 If a jet is inclined upward 30 from the horizontal, what must be its velocity to reach over a 3-m wall at a horizontal distance of 18 m, neglecting friction? Regents Chemistry class Union Springs High School 4th period The cotton swab used was subjected to the flame test procedure in order to ensure that the Title: Lab reports can be easily divided into two types, the Technique Lab and the . This would mean both the solids solubility and conductivity would be incorrect. as expected and that there are no contaminations that might affect the result of the experiment. KCl In this classic science experiment, students report on the colours produced when flame tests are carried out on different metal salts. Lithium Nitrate Repeat step 4 for each of the unknown metals and predict the identity of the unknown metals. Magnesium did not impart any color change in the flame. When subjected to flame test, copper(II) gluconate CuC6H11O7 will produce a green flame because of the copper anion present. When you sit down remove them, Premium Springdale School, Inc. to help determine its contents. Unknown solutions AB & C Barium Nitrate A flame test is used to identify certain metals in a compound or single element.1 When an electron jumps up to a higher energy state the element is in its excited state. The Bunsen burner was set up and the flame was adjusted to the desired height. This is because a change in oxygen being given to the flame changes how hot the flame is. Flame tests are useful means of determining the composition of substances. The purpose of this lab was to see what colors are characteristic of particular metallic ions in a flame test and use their characteristic color to identify other elements. Clean the flame test wire, then test another known test solution. Sodium chloride Period 2 Flame Test Lab When you place a metal under a flame, the increased temperature excites it, and it jumps up to a higher energy level. For different elements the spacing between the ground state and the higher energy levels is different. A sample was obtained from the Purok Kaymito River, contained in a bottle for easy access, and underwent multiple experiments to determine its content; namely, physical properties, power of hydronium ions, heavy metals, anions, hydrocarbons, and bacteria. Table 1 proves my hypothesis to be correct. Make a note of the colour of the flame on your Flame Test Chart (a simple version is shown below). Flame Test Kit. When there is an unknown compound, the metal can be found by using previous data from previous tests. as a negative control for this experiment. compounds. It can also help one determine what metal to use in fireworks to portray a certain color. The normal electron configuration of atoms or ions of an element is known as the ground state. Various Color of Light as the Effect of Electron Emission Analysis of this light can be used to identify elements and molecules. The flame test is a procedure used by chemists to identify the presence of specified metal ions based on the color the flame that appears along with it when it s heated. Calcium Nitrate (being released) by the electrons to go back to their most stable state is specific and unique for This experiment will help one understand how a flame test is performed and that every metal has a unique bright, Premium List the colors observed in this lab from shortest wavelength to longest wavelength. Chemical Inventory: This information can be used to identify elements in space to tell whether a planet has oxygen on it or not. Then, in the 1830s, the Italians discovered that adding metal salts to the fireworks mixture resulted in interesting colors, just like in the flame test in this science activity. Based on the results of the flame test, it was evident that the main ions responsible for the color intensity of the flames are the metal cation. ground state. different color with the flame produced by the gas burner. During a flood, the labels from three bottles of chemicals were lost. By using the metal that emits the color one wants in fireworks, one can get the desired color. If you teach high school chemistry, you likely have access to bunsen burners, inoculating loops, goggles, and a stock room full of chemicals. Long hair should be tied up to avoid being singed. Chemistry, A flame test is conducted when an element is burned and the flame produces a color different the starting flame color. All alkaline earth metals except beryllium There were nine ionic compounds which were subjected to direct flame using a gas burner and the color of the flame that these substances give off were observed and recorded. endobj 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. Although the aforementioned artificial sweeteners have similar white and powdery texture, they can be easily distinguished using a flame test. A qualitative chemicals analysis of the river was conducted to assess its water quality status. Using your data, identify the metal ion in your unknown solution. These studies are very helpful in determining an unknown element given the fact that all elements burn a different color. When you place a metal under a. flame, the increased temperature excites it, and it jumps up to a higher energy level. Light This means a bright line spectra can be used to identify any element. When the metal ion cools, the electrons go back to their original orbital and release energy in . LiCl Intro: This excited configuration is unstable, Premium Chemistry lab report conclusion. Flame Test Lab Conclusion Alex Stark, Chase, and Tanner Conclusion The data that we collected shows that the spectroscope is suitable for the Flame Test Lab. Red, Green, Blue. Bunsen burner This is known as the excited state. 3. SrCl2 The color of the flame was recorded in table 1. The experiment conducted aimed to give students the opportunity to determine different |Lithium Chloride, Premium Turn the plate approximately 45 degrees and streak the second quadrant by passing the loop through the first quadrant a few times and then streaking the rest of the second quadrant. Brown, T. L., Lemay, H. E., & Bursten, B. E. (1994). However the excited configuration is unstable and the electrons must return back to their positions in the lower energy level. Metal Each. Potassium Nitrate Also Thermal excited electron goes from low to high energy level which raises the color but when the excitation ends electron gets to lower level which makes the color back to normal. In chemistry, the flame test is a simple qualitative analysis technique to check for the presence of alkali, alkaline-earth metal ions and some transition metals. Flame tests and chemical tests are used to detect and identify ions in samples. But, when an atom is bombarded with a form of energy, such as flame, the The color of the flame and component colors is unique for each . Another purpose is to understand how fireworks work. If the flame changes to the color corresponding to the cation's characteristics, then the cation is present in the unknown. Metals are good conductors another element in a ratio of small whole numbers. What could the student do to correctly identify these substances? The cotton swab Conservation of energy, Timothy Johns A novel P/N flame-retardant monomer . A FLAME TEST LAB PROCEDURE Studylib. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. 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. The student could match their observances to the specific color a flame would make when it comes into contact with a substance. Flame test is a very common test used to identify metals of unknown chemical compound Repeat if necessary. Conclusion - Chemical flames Conclusion Using the results of the experiment it has been concluded that different colored chemicals can produce different colored flames. Is shown below ) or there may have been an inconsistency in the energy! 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