The purpose of this experiment is to observe the characteristics colors produced by certain metal ions when vaporizing in a flame, and then identifying an unknown metal ions by using flame test. Electromagnetic radiation is energy that travels a wave, including microwave infrared radiation radio waves x-ray, radio waves,x-ray,gamma radiation, cosmic rays and visible light .there are two types of wavelength short wavelength such as x-ray, radiation and cosmic rays and long wavelength such as infrared radiation, microwaves and radio waves. long wavelength have low frequencies and low energy while short wavelength have high frequency and high energy. visible lights: a small portion near the center of electromagnetic spectrum wavelengths in range …show more content…
in part A of this experiment a high voltage power supply will be used to create a discharge across a tube filled with gas to excite electrons to a higher energy . the light emitted as the electrons return to lower energy levels will be passed through a diffraction grating and the resulting line spectrum will be observed . in part B I will use the heat from a Bunsen burner flame to excite electrons in solutions of the chloride salts of several metals. The light emitted as the electrons return to lower energy level will not be separated into its compounds. Instead resulting distinctive color of the flame will be observed (the flame test). since all the salts tested contains chloride ion the distinctive colors must be produced by the metal ions. after observing the color associated with the known metal ions , I will perform a flame test on an unknown solution, then identify the metal ion present in the unknown …show more content…
each element gives off a different color. for each discharge tube , look through the diffraction grating to observe the line spectrum of the element, and describe each spectrum listing the number and color of the line. In part B- flame test ● test a solution using the bunsen burner flame by dipping a wooden splint into the solution, and then holding it in the hottest part of a properly adjusted bunsen burner flame . ● testing barium compounds ,soak a wooden splint into the provided barium chloride solution in the hood for at least one minute ● take the splint and hold the dipped side of the splint in the Bunsen burner flame and note the color and persistence of the color imparted to the flame with new splints for each test repeat this procedure for solutions of calcium chloride, copper (II) chloride, lithium chloride, potassium chloride, sodium chloride, and strontium chloride. ● finally, observe the flame color for an unknown solution which contains only one of the seven metal ions. identify the metal ion present in the unknown solutions . ● remember that the sodium ion is ubiquitous it’s found in significant amounts in the wooden splint