This would be a huge advance in science if it was possible to tell if people can live on other planets by knowing the elements on the other planets. Again, do not over heat the loop. Stand up when doing the experiment at all times as your have more time to move away from an accident. In the flame the metal atoms become excited and produce their characteristic spectrum of light. By gently scrubbing the beakers with a brush and the soapy water you will be able to wash off the labels you put on them. Some metals do produce very similar colors but a practiced eye can often distinguish them.
Introduction- 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. These studies are very helpful in determining an unknown element, given the fact that all elements burn a different color. We understand that they are. Use the Representative Wavelength values. This procedure was repeated for the other seven salt solutions and the one unknown solution. Close the container after you have finishing using it. We lit matches and burned the chemical which made different colors based on the chemical.
After the lab was finished, the area was cleaned up, everything was put away, and hands were washed before leaving. Flame tests can also be used to find the color of fireworks one wants to use. Evaluation The problems encountered was that the colour of the metal salt on the metal loop was all different kinds of colour from substances before the test so I had to clean it under a roaring flame which took quite a long time. Another purpose is to understand how fireworks work. Our Results: Peer Results Actual Values Percent Error Li 0% Na 0% K 1. I also predict that all of the metals will emit a color in the visible spectrum.
Place about 5 mL of each solution into each test tube, and 10 mL of Hydrochloric Acid into the 50 mL beaker. After this, the Bunsen burner was carefully lit. The color of the flame corresponds with each element. Look at the compounds we tested and determine whether it is the metal or the non-metal that is responsible for the color produced in the flame test for that salt. The colors produced by the flame test are compared to known standards. This experiment can help to identify elements in space to help scientists know whether a planet has oxygen or not.
Red has the lowest amount of visible light energy. Charlie Wilson Written by: Dipen Patel I. Record your observations for the flame color produced by each metallic salt in the Data Table. Based on our chemistry classes there are two ways of getting the atoms excited: a Through heating ; example by using flame as in the flame test so the atom electrons can be induced to absorb energy and jump to an excited energy through jumps called Quantum Jump: This is when electrons jump to an excited state the they get back to their ground state by emitting a photon , the amount of energy in that photon determines its color ; red for the lowest energy of visible light, increasing energy through the rainbow of orange, yellow, green, blue, indigo, and finally violet for the highest energy of visible light. 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. Clean the Nichrome wire before each test. The writing should be simple and easy to understand.
Identify unknown metallic ions by means of its flame test. Acetylene, Combustion, Gas 657 Words 3 Pages Discussion Questions 1. Atom, Chlorides, Electrolysis 861 Words 4 Pages Sydney Schell October 18th, 2012 Identifying Metallic Components Introduction: Spectroscopy is the study of the electromagnetic radiation emitted or absorbed by the atoms and molecules. Purpose: To determine the colors of the Atomic Emission Spectra of several metallic ions. Table 1 proves my hypothesis to be correct. The World Wide Web also says that lithium chloride burns red but in the lab it was observed as a neon red color. The hypothesis was correct because each compound placed in the flame, did in fact, change the color of the flame.
If you test 2 solutions and find that they both produce a red flame, how can you determine for sure whether they contain the same metal? The colour of test compound C was lilac which means the metal is Potassium. . Record your observations in the data table. Bacteria, Gram staining, Metabolism 527 Words 4 Pages Acetylene Gas Introduction The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The prelab must be completed prior to the day of the experiment. Background The electrons in an atom occupy different energy levels, as you know.
It will appear to be one color, which is carefully described. Safety Requirements for this Lab: Wear goggles at all times. Qualitative test- flame tests Introduction For this test I had five containers labelled A-E. Kuno Hottenrott stated that the normal average heart rate of people ranges from 40 to 100 beats per. The frequencies of the light given off are characteristic for each element. Then the test stick 4 was put to fire and observe the color of the flame. This means a bright line spectra can be used to identify any element.
Whether the tests performed identified specific enzymatic reactions or metabolic pathways, each was used in a way to help recognize those specifics and identify the unknown cultures. By looking at the color you can see if it matches any previous tests and possibly find the name of the metal. Label the test tubes with the names of the solutions and unknowns. One of the samples was put on the spatula and the formula of the was recorded into Table 1. Fill a second 250-mL beaker about half-full with tap water.