1. Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame Barium greenish/yellow Calcium red Sodium yellow Rubidium purple/hot pink/ white Potassium blue/ white Lithium pink/white Unknown 1 yellow Unknown 2blue/white
2. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did.
Unknown 1: Yellow (Sodium) . Unknown 1 was sodium because it had a yellow color when burnt. Unknown 2: Blue/White (Potassium) Unknown 2 was potassium was potassium because when burnt, the same color appeared with potassium was burnt.
Part Two (Spectroscopy):
1. Create and complete a data table for Part Two of the lab. It should include the name of the element, the colors, and the wavelength values of the observed lines.
2. Describe the line spectrum of the star. Give the color and wavelength value of the five brightest lines in the spectrum. The line spectrum of the star goes from the colors purple to red. ( Purple being first and
Red being last.) The five brightest lines were:
1. Color = Purple wavelength = 415
2. Color = Blue/Green wavelength = 490
3. Color = Green wavelength = 550
4. Color = Yellow wavelength = 585
5. Color = Red wavelength = 710
1. Explain, in your own words, why different elements produce different colors of light when heated. Different elements produce different colors because there are many different amounts of electrons and they all are energized to a different degree. Electrons emit lights because of kinetic energy.
1. Why do you think elements must be heated before they emit colored light? Elements must be heated so