Lab Preparations: Watch the online video in the “Lab Prep” tab. Flame Test (Known Samples) Watch the online flame tests of the experiment’s known samples. For each sample record your observations below: Chemical Substance Flame Test Color Observed Sodium sulfate, Na 2 SO 4. Sodium chloride, NaCl. Potassium chloride, KCl. Potassium iodide, KILab 4.1b Flame Tests Revised: 2019-09-25 Chemistry I/H BACKGROUND Why do we see colors in a flame test? The electrons in an atom occupy different energy levels, as you know. When all of the electrons are at the lowest possible energy level they are said to be in the ground state. Electrons do not always stay in the ground state. Sometimes they ...The term “segs” is laboratory shorthand for segmental neutrophils. “Segs” are part of a white blood cell differential test and are responsible for fighting infection within the body.A Safer "Rainbow Flame" Demo for the Classroom. Demonstration Procedure : View a video of this demonstration from the American Chemical Society. The day before the demonstration: Pour ≈50 mL of each of the solutions into labelled beakers. Add wooden splints to each beaker and allow to soak overnight. Explain your answer. Flame Test for Metals Rubric 70 points ____ 4 pts Lab is written according to basic lab instructions ____ 2 pts Rubric is included ____ 5 pts Questions answered with question clearly indicated with the answer ____ 10 pts Lab physically completed on day class is assigned (no make ups) if absent, data will be providedVideo Transcript. In this video, we will learn about flame tests, how to do them, why they work, and how they allow us to identify the metal ions in some substances. We’ll look at the colours produced by alkali, alkaline earth, and other metal ions. A flame test is an experiment where a substance is put into a flame.Study with Quizlet and memorize flashcards containing terms like In general, what is the range on wavelengths in the VISIBLE spectrum?, Which color has the longest wavelength? The shortest? Which color has the highest frequency? The lowest? Which color has the highest energy value? The lowest?, What are the electrons of each elements doing when you observe the colors of the flame tests? and more.Jul 14, 2012 · This activity combines experimental flame tests with a simulation exploring emissions from discharge lamps. Both activities may be performed in the same lab period. The handout accompanying the simulation includes common questions/topics pertaining to multi-electron atoms and periodic trends. Founded in 2002 by Nobel Laureate Carl Wieman, the ... Chemistry questions and answers. Flame Tests and Atomic Spectra Part A: Flame Tests of Metal Cations Experimental Data and Observations Solution Dominant Flame Flame Intensity Flame Duration Wavelength (nm) Color (low, medium, high) (seconds) BaCl2 Yellow to orond 597 high 13 sec CaCl2 Dombe 609 high 13 sec CuCl2 Green blue Imedium КСІ ...Jan 25, 2023 · The wooden splints are soaked in water overnight. The splints are rinsed with clean water without contaminating it with sweat. A damp splint or cotton swab moistened in water is dipped in the sample to be tested. The splint or swab is waved through the flame. A new splint or swab is used for each test. Click the card to flip 👆. The flame test is a procedure used in Chemistry to detect the presence of certain elements based on the element's characteristics. The test shows the identity of the substance being tested. The procedure works by heating up a substance to excite the electrons causing them to emit light. The Flame Test lab has been perfected by Robert Bunsen, who created the Bunsen burner. This lab has worked better with metal ions compared to the actual metal. It has been found that metallic ions exhibit characteristic colors when vaporized in the burner flame. Materials: Set of Metal Solutions: -Sodium -Lithium -Strontium -Barium -Potassium ... Take a damp splint or cotton swab that has been moistened in water, dip it in the sample to be tested, and wave the splint or swab through the flame. Do not hold the sample in the flame as this would cause the splint or swab to ignite. Use a new splint or swab for each test.The objectives of this lab are to: Watch a flame tests of metal cations video in order to observe their characteristic colors, Perform calculations to determine the frequency and …Teacher Notes – Flame Test Lab Preparation: Prepare 0.5 M stock solution of NaCl, KCl, LiCl, BaCl 2, CuCl 2, SrCl 2, CaCl 2 Select at least one of the solutions to prepare double the amount of stock. Label this solution(s) “Unknown”. *This test can be done using cotton Q-tips also. Heat the Q-tip until no color is imparted to the flame.Read the introduction as many of the answer to the questions are contained here. 2. Watch the Firework colours video to learn about flame tests. 3. Fill in the data table below by watching the Flame Lab Test video. 4. If you need to double check your answers to the flame tests, you can use this Javalab.The most challenging activity in this lab was activity 3. This activity required the most precision. The easiest colors to observe during the flame test were that of copper chloride and lithium chloride. For potassium chloride there was a purple color close to the stick but the flame remained orange for the majority of the burn time. The aim of the flame check lab is to watch the traits colours produced by sure metallic ions when vaporized in a flame. Use flame exams to establish a metallic or metallic salt by the colour that it produces when it’s put right into a flame. Supply: www.shucksciencenotebook.yolasite.com. Establish unknown metallic ions by the use of …Looking at Part 2, answer the following questions: a. Which element had the fewest number of clearly visible emission lines? [ Sodium ] Using the electromagnetic spectrum diagram below, answer the following questions (remember, energy is. proportional to frequency and frequency is inversely proportional to wavelength): a. Explain your answer. Flame Test for Metals Rubric 70 points ____ 4 pts Lab is written according to basic lab instructions ____ 2 pts Rubric is included ____ 5 pts Questions answered with question clearly indicated with the answer ____ 10 pts Lab physically completed on day class is assigned (no make ups) if absent, data will be providedMoisten the wire with water. Dip the wire into the solid you're testing, making sue that a sample sticks to the wire. Place the wire in the flame and observe any change in the flame color. The colors observed during the flame test result from the excitement of the electrons caused by the increased temperature.Photon of electromagnetic radiation The measurement of white light Between 400 and 700 nm 410^-7 --> 7 10^-7 Metals or nonmetals have loosely held electrons? Metals What is the color of the flame a combo of? Combo of wavelength of each transition and may be used to determine the identity of an ion How is a colored flame produced?purpose of lab. ANSWER : to observe the characteristic colors produced by certain metallic ions when vaporized in a flame; identify unknown metallic ions by means of the flame test. equipment needed in lab. ANSWER : 1) 10 mL graduated cylinder 2) laboratory burner 3) safety goggles 4) lab apron 5) wooden splints. materials needed in …1 / 20 Flashcards Learn Test Match Q-Chat Created by kamsi19 Terms in this set (20) metallic salt compounds composed of Alkali Metals (Group 1), Alkaline Earth Metals (Group 2), and one Transition Metal, combined with nitrate (NO3-). testing solutions reactions of the more energy they have the further away from a nucleus electrons areFlame tests are used to identify the presence of a realatively small number of metal ions. You dip a metal wire into a solution and put it over the hottest part of the flame. This will give off a color showing what elements are present in the compound. 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. Ionic compounds used for flame test 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 ...Flame Tests - Lab Experiments | PASCO Flame Tests Students use flame test observations to identify an unknown compound. Supports NGSS Performance Expectation HS-PS1-1: Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms. Grade Level: High SchoolThe wooden splints are soaked in water overnight. The splints are rinsed with clean water without contaminating it with sweat. A damp splint or cotton swab moistened in water is dipped in the sample to be tested. The splint or swab is waved through the flame. A new splint or swab is used for each test.Flame Test Lab Answer Key ——— DOWNLOAD . il y a 4 jours — In this experiment you will use the photoelectric effect to measure the Planck constant h. … Photoelectric effect beyond labz answer key.need ... flame answer meaning; twin flame answers; flame test lab answers quizlet; Perform a flame test to identify the characteristic color ...Flame Test Lab The Independent Variable is compounds used to burn in the fire. The Dependent Variable is the color of the flame. The controlled variable is the height of the flame. Purpose: The lab was to observe the flame colors of some metal ions. It was also to be able to tell the difference between the different metals, by the color of the flame they …When it comes to ensuring the quality and safety of products, ASTM testing labs play a crucial role. These labs are responsible for conducting tests that meet the standards set by the American Society for Testing and Materials (ASTM).Flame Test Lab Questions Answer Key: Flame Test Lab Questions Answer Key: You could readily identify the elements that had obvious colors different form all the others- such as copper that gave off a blue/green color and lithium that gave off a bright red color. It was difficult to identify a couple of the elements that had colors that were ...The flame test is one of the most commonly used analytical processes in chemistry. It is widely used to detect and analyze the presence of certain elements in the given salt or compound. Primarily, the flame test detects the presence of metal ions in a compound, and as ions of each element have a specific characteristic based in their emission ...Lab Preparations: Watch the online video in the “Lab Prep” tab. Flame Test (Known Samples) Watch the online flame tests of the experiment’s known samples. For each sample record your observations below: Chemical Substance Flame Test Color Observed Sodium sulfate, Na 2 SO 4. Sodium chloride, NaCl. Potassium chloride, KCl. Potassium iodide, KI Lab Partner: Avery Martin 12/17/12 Flame Tests ABSTRACT: In this flame test experiment, seven different known solutions and three different unknown solutions were tested in a burner. After several tests for each solution it was determined that the accepted values for each solution, in order, were: Ba(NO 3) 2, yellow-green; Cu(NO 3) 2, green; LiNO 3The “flame test” lab is a classic experiment that is enjoyed by all chemistry students. Students absolutely love this lab, and it is a great way to review and reinforce the concepts of electrons, excited state, ground state, and the visible spectrum.=====Please Note: This lab is included in a money-saving bundle of labs called "15 Must-Do Physical Science and Chemistry Labs." heated in the flame of a gas burner are the basis of flame tests for several elements. In this experiment, you will perform flame tests for several metallic elements. Then you will …figure A. figure B. Objective: In this virtual lab you will: 1.Observe the bright line spectra (emission spectra) for various elements. 2.Use a flame test to observe the color produced when metal ions are heated. 3.Identify unknown metals ions based on the results of the flame test. Procedure:Task: Use a flame test to determine which ion salt produces the red color. Then using a spectroscope, match the bright line spectra from red fireworks to a substance in your material list. Then make your final determination of what ion in the material list causes red fireworks. Procedure: Watch the video to collect your flame test data. Write ... Flame Test: Virtual Lab Document. Problem: How do flame colors vary for different elements? Introduction: The energy levels in atoms and ions are the key to the production and detection of light. Energy levels or "shells" …To find answers to questions about MySpanishLab, go to the MySpanishLab Pearson login website, log into the system and access the online tutor feature. Pearson Education offers one free 30-minute tutoring session with select MyLanguageLabs ...14 abr 2015 ... a) Creating a flame test key from known metallic compounds<br />. b) Identifying an unknown metal in a compound by using the flame test key<br />.Demonstration. This demonstration experiment can be used to show the flame colours given by alkali metal, alkaline earth metal, and other metal, salts. This is a spectacular version of the ‘flame tests’ experiment that can be used with chemists and non-chemists alike. It can be extended as an introduction to atomic spectra for post-16 students.Study with Quizlet and memorize flashcards containing terms like What is a flame test? What does it show? How is it done?, Under what circumstances do atoms give off light? …1) Put on your goggles/apron and light your Bunsen burner, setting it to the hottest flame. 2) To perform the flame test, hold the atomizer about 10 cm to the side of the flame and give a quick spray directly into the hottest part of the flame. Note the color of the flame produced for each salt on the data table below. Lab Report properties of gases lab report assistant exercise gas and flame tests data table gas observations chemicals hcl zinc hydrogen gas flame mn h2o2. Skip to document. ... Explain your answer. The solution had turned a yellowish green. This means that the BTB picked up the presence of an acid. Hence, an acid was present.Flame Tests - Lab Experiments | PASCO Flame Tests Students use flame test observations to identify an unknown compound. Supports NGSS Performance …The Flame Test is an analytical test that is used to determine (or give a clue) the presence of cation by dipping the salt in concentrated HCl and then placing it in a hot (non-luminous) Bunsen burner flame until the color of the corresponding ions appears. REFERENCE. Chem - 13.35.T - Assignment_ Flame Test Lab Submission.docxExperiment #1: Flame Test banawis hjc, baluyot kje, bullo pvgd. group of mt che 009 flame test objective: solution. (safety: in getting the hcl solution, to. ... Lab report - Experiment #1: Flame Test. University: Our Lady of Fatima University. Course: Analytical Chemistry (CHM4) 124 Documents. Students shared 124 documents in this course.Method 2: Take the nichrome or platinum wire and create a small loop at the end by bending the wire. Light the Bunsen burner. Turn the collar on the Bunsen burner so that you have an invisible or pale blue flame. Burn the loop end of the wire to remove any dust. Dip the loop into the lithium salt solution.The lab will be introduced with a powerpoint on the mechanics of the release of energy from the atom. (down loaded file) The student will conduct flame tests on a number of unknown salt compounds. Closure strategies will occur next day (due to time) with a discussion and a short quiz. Student Handout for Flame test (Microsoft Word 38kB Aug2 09)Date: Period: Flame Test Part 1: Pre-Lab Introduction: In this lab you will conduct a flame test of 3 unknown solutions. You will measure wavelengths of each sample and then use …Data Table Flame Tests [Answers] Ion Flame Color sodium, Na+ Yellow sodium, Na+ (cobalt glass) Dark Blue potassium, K+ Light Pink potassium, K+ (cobalt glass) Dark Pink calcium, Ca2+ Orange barium, Ba2+ Green strontium, Sr2+ Red copper, Cu2+ Blue with some Green in it unknown #1 Potassium unknown #2 Calcium unknown #3 Barium unknown #4 CopperThe next job is to do your flame tests. Dip the flame test loop into one of the known test solutions, then hold the metal loop in the edge of the Bunsen burner flame. Make a note of the colour of the flame on your Flame Test Chart (a simple version is shown below). Clean the flame test wire, then test another known test solution.Oct 14, 2019 · The flame test is one of the most commonly used analytical processes in chemistry. It is widely used to detect and analyze the presence of certain elements in the given salt or compound. Primarily, the flame test detects the presence of metal ions in a compound, and as ions of each element have a specific characteristic based in their emission ... crystal violet pre lab answers is used by drovualovphe in _TOP_ Crystal Violet Pre Lab AnswersStep 7. Unknown Crystals: Repeat the flame test steps using a small unknown crystal from the previous experiment as the sample. Use a clean, uncontaminated wire from the provided beaker. Record your observations in your notebook and use the results of the previous tests to determine which metal ions (if any) are present in the unknown crystals.Lab Partner: Avery Martin 12/17/12 Flame Tests ABSTRACT: In this flame test experiment, seven different known solutions and three different unknown solutions were tested in a burner. After several tests for each solution it was determined that the accepted values for each solution, in order, were: Ba(NO 3) 2, yellow-green; Cu(NO 3) 2, green; LiNO 3 Flame tests are used to identify the presence of a realatively small number of metal ions. You dip a metal wire into a solution and put it over the hottest part of the flame. This will give off a color showing what elements are present in the compound. Flame Test Lab. The purpose of the flame test lab is to observe the characteristics colors produced by certain metallic Ions when vaporized in a flame. Identify unknown metallic Ions by means of its flame test. For this lab we got a whole bunch of compounds and burned them to observe the flame and frequency based off the color of the flame. Lab 4.1b. Flame Tests. Revised: 2019-09-25. Chemistry I/H. BACKGROUND. Why do we see colors in a flame test? The electrons in an atom occupy...CHM 130LL Lab Safety w Answer Key. Introductory Chemistry I None. 3. Flame Test Lab aaliyah lopez. Introductory Chemistry I 50% (4) 6. ... Flame Test Lab aaliyah lopez. Introductory Chemistry I 50% (4) 6. Density A characteristic Property aaliyah lopez. Introductory Chemistry I 100% (1) 2.2.6: Flame test. Page ID. Muhammad Arif Malik. Hampton University, Hampton, VA. A flame test is a complex phenomenon that is not fully explained. In simple words, when a solution of metal salts, e.g., an aqueous solution of metal chlorides is injected into a flame, some of the metal ions may gain electrons and become neutral metal atoms.Chapter titles: 00:10 Introduction; 01:12 Flame tests for metal ions; 04:38 Metal hydroxide precipitate test; 07:56 Testing for negative ions; 11:54 Unknown substances. Download additional resources Supporting resources booklet including pause-and-think questions with answers, teacher notes, intended outcomes, follow-up worksheets and …Flame Tests. Students use flame test observations to identify an unknown compound. Supports NGSS Performance Expectation HS-PS1-1: Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms. Grade Level: High School. In this lab we will prepare .2 M solutions of strontium chloride, copper II chloride, and potassium chloride. We will test the solutions to identify the distinct color each metal ion produces when placed in a Bunsen burner flame. Then we will calculate the approximate frequency and energy of each wavelength of visible light.Explain your answer. Flame Test for Metals Rubric 70 points ____ 4 pts Lab is written according to basic lab instructions ____ 2 pts Rubric is included ____ 5 pts Questions answered with question clearly indicated with the answer ____ 10 pts Lab physically completed on day class is assigned (no make ups) if absent, data will be provided A glowing splint bursts into flames when exposed to an oxygen-rich environment because the abundance of oxygen accelerates the combustion reaction of the splint material. The higher the oxygen concentration is, the more vigorously the glowi...First, prepare your lab by placing the goggles over your eyes, connecting the bunsen burner to the gas, heating the bunsen burner with the lighter, and placing wooden sticks inside of the elements. Then, place one of the saturated sticks into the flame. Finally, observe the various colors that will appear based on the element that is tested.1.10.2 demonstrate understanding of how to carry out a flame test using nichrome wire; and ; 1.10.3a use cation tests, including: flame tests to identify the metal ions Li⁺, Na⁺, K⁺, Ca²⁺, Ba²⁺ and Cu²⁺; and ; 1.10.3b adding sodium hydroxide solution and warming to identify …When it comes to ensuring the quality and safety of products, ASTM testing labs play a crucial role. These labs are responsible for conducting tests that meet the standards set by the American Society for Testing and Materials (ASTM).If you’ve scheduled an appointment at Alberta Precision Labs, you’re taking a proactive step towards managing your health. Whether it’s for routine blood work or a specific test, it’s important to prepare for your appointment to ensure the ...When it comes to ensuring the quality and safety of products, ASTM testing labs play a crucial role. These labs are responsible for conducting tests that meet the standards set by the American Society for Testing and Materials (ASTM).Flame Test. Take a lookup into the sky during a firework show and just imagine; each and every one of the vibrant colors that can be seen is the direct result of a specific chemical being ignited.Photon of electromagnetic radiation The measurement of white light Between 400 and 700 nm 410^-7 --> 7 10^-7 Metals or nonmetals have loosely held electrons? Metals What is the color of the flame a combo of? Combo of wavelength of each transition and may be used to determine the identity of an ion How is a colored flame produced? Read the introduction as many of the answer to the questions are contained here. 2. Watch the Firework colours video to learn about flame tests. 3. Fill in the data table below by watching the Flame Lab Test video. 4. If you need to double check your answers to the flame tests, you can use this Javalab.Lab Report Flame Test. Jonathan Ko. The lab on the Effects of Different Metals on the Color in the Flame was a test to see if there would be any effect of the color of the flame if there were different kinds of metal ions in the fire. During the lab, 13 types of metal ions were tested and two were repeated with using a cobalt glass.Step 7. Unknown Crystals: Repeat the flame test steps using a small unknown crystal from the previous experiment as the sample. Use a clean, uncontaminated wire from the provided beaker. Record your observations in your notebook and use the results of the previous tests to determine which metal ions (if any) are present in the unknown crystals. Take a damp splint or cotton swab that has been moistened in water, dip it in the sample to be tested, and wave the splint or swab through the flame. Do not hold the sample in the flame as this would cause the splint or swab to ignite. Use a new splint or swab for each test.The tests that students should research and plan detailed methods for are given below. Flame tests 1. Use a clean nichrome wire to mix a sample of a solid compound with a few drops of concentrated hydrochloric acid. 2. Hold the wire at the edge of a hot Bunsen burner flame and observe the colour. Flame colour Metal cation yellow sodiumThe term “segs” is laboratory shorthand for segmental neutrophils. “Segs” are part of a white blood cell differential test and are responsible for fighting infection within the body.If a sample containing a mixture of ions is used some flame colours can be masked. Edexcel Chemistry. Topic 9 - Separate chemistry 2. Qualitative analysis: test for ions. 9.2Ca Describe flame tests to identify the following ions in solids: lithium ion, Li⁺ (red) 9.2Cb sodium ion, Na⁺ (yellow) 9.2Cc potassium ion, K⁺ (lilac)Step 7. Unknown Crystals: Repeat the flame test steps using a small unknown crystal from the previous experiment as the sample. Use a clean, uncontaminated wire from the provided beaker. Record your observations in your notebook and use the results of the previous tests to determine which metal ions (if any) are present in the unknown crystals.Interview. first, they take your 2-hour assessment test which includes oops coding assessment aptitude and logical reasoning after they conduct a technical interview, and the last one hr round so this the blue flame interview process. Interview Questions. what are oops and dbms joins and os and some coding questions.
Use flame tests to identify a metal or metallic salt by the color that it produces when it is put into a flame. Calculate the frequency of light given its wavelength. Calculate the wavelength of light given its frequency. Identify an unknown metal by the color it emits when passed through a flame. Chemistry Topics. Rafael's shelbyville tn
Task: Use a flame test to determine which ion salt produces the red color. Then using a spectroscope, match the bright line spectra from red fireworks to a substance in your material list. Then make your final determination of what ion in the material list causes red fireworks. Procedure: Watch the video to collect your flame test data. Write ...Mar 8, 2021 · To become familiar with the transfer of energy in the form of quantum, students perform flame tests, which is one way chemical engineers identify elements—by observing the color emitted when placed in a flame. After calculating and then preparing specific molarity solutions of strontium chloride, copper II chloride and potassium chloride (good practice!), students observe the distinct colors ... Are you in need of medical testing or lab services? Look no further than Quest Diagnostics, a leading provider of diagnostic information services. To ensure a seamless experience, it’s important to book your Quest lab appointment in advance...2.05 Atomic Energy Virtual Lab Report Instructions: Complete all sections of this report and answer all questions in complete sentences for full credit. Use the grading rubric before you begin. Title: Atomic Energy Lab Objective(s): To determine the composition of the new star using a spectrometer Hypothesis: Each heated element will produce its own unique …Note: A common household 100 watt light bulb uses 100 joules every second.Even though this energy is not converted completely into light, we can make a rough assumption that it is. If this energy is emitted as light ( really much is disipated as heat) it means 3.28 x 10 20 photons (330,000,000,000,000,000,000 photons) would have to be …Flame Test Kit Student Laboratory Kit Introduction Just as a fingerprint is unique to each person, the color of light emitted by metals heated in a flame is unique to each metal. In this laboratory activity, the characteristic color of light emitted for calcium, copper, lithium, potassium, sodium, and strontium will be observed. Chemical ConceptsA flame test is a procedure used to test qualitatively for the presence of certain metals in chemical compounds. When the compound to be studied is excited by heating it in a flame, the metal ions will begin to emit light. Based on the emission spectrum of the element, the compound will turn the flame a characteristic color.heated in the flame of a gas burner are the basis of flame tests for several elements. In this experiment, you will perform flame tests for several metallic elements. Then you will …Place the crucible containing the magnesium ribbon back into the clay triangle. Put the lid close by on the lab bench, with crucible tongs to handle it with later. Light the Bunsen burner and start heating the crucible and magnesium ribbon. As soon as the magnesium ribbon starts to burn, put the lid back (using crucible tongs) to put out the flame.Study with Quizlet and memorize flashcards containing terms like In general, what is the range on wavelengths in the VISIBLE spectrum?, Which color has the longest wavelength? The shortest? Which color has the highest frequency? The lowest? Which color has the highest energy value? The lowest?, What are the electrons of each elements doing when you observe the colors of the flame tests? and more.Explain your answer. Flame Test for Metals Rubric 70 points ____ 4 pts Lab is written according to basic lab instructions ____ 2 pts Rubric is included ____ 5 pts Questions answered with question clearly indicated with the answer ____ 10 pts Lab physically completed on day class is assigned (no make ups) if absent, data will be providedLab Partner: Avery Martin 12/17/12 Flame Tests ABSTRACT: In this flame test experiment, seven different known solutions and three different unknown solutions were tested in a burner. After several tests for each solution it was determined that the accepted values for each solution, in order, were: Ba(NO 3) 2, yellow-green; Cu(NO 3) 2, green; LiNO 3Part A: Flame Tests of Metal Cations. Observe the color of the flame produced with each metal compound shown in the video. Students will record the dominant flame color observed. Analysis: For each metal cation flame test performed, determine the wavelength corresponding to the observed flame color from the table below.Lab 4.1b Flame Tests Revised: 2019-09-25 Chemistry I/H BACKGROUND Why do we see colors in a flame test? The electrons in an atom occupy different energy levels, as you know. When all of the electrons are at the lowest possible energy level they are said to be in the ground state. Electrons do not always stay in the ground state. Sometimes they ... A flame test is a procedure used to test qualitatively for the presence of certain metals in chemical compounds. When the compound to be studied is excited by heating it in a flame, the metal ions will begin to emit light. Based on the emission spectrum of the element, the compound will turn the flame a characteristic color..