Download flame test

Name ___________________
Chemistry
Period ______
Date ____________________
Calculations – for each compound, determine the wavelength,
frequency, and energy of the light produced. Show all work
FLAME TEST LAB
Purpose: To determine the energy of light released from atoms
of certain metallic elements.
Procedure:
1. Label each test tube with the chemical formulas of the
compounds to be tested.
2. Get a scoopful of each compound and place in the
appropriate test tube.
3. Get 5 popsicle sticks.
4. Fill beaker with about 50 ml of water.
5. Dip a stick in the water and then into a test tube to coat
the stick with the chemical.
6. Hold the stick over the burner until it changes color.
7. Repeat steps 5-6 for the remaining compounds.
Data
Compound: __________
Wavelength of light: ___________
Frequency of light :
___________
Energy of light : _______________
Compound: __________
Wavelength of light: ___________
Frequency of light :
___________
Energy of light : _______________
Compound: __________
Compound: __________
Wavelength of light: ___________
Wavelength of light: ___________
Frequency of light :
___________
Energy of light : _______________
Frequency of light :
___________
Energy of light : _______________
Questions:
1) Explain how electrons become “excited”.
Compound: __________
Wavelength of light: ___________
2) What is the relationship b/w the energy of the light
given off and the energy lost by the electron?
Frequency of light :
___________
Energy of light : _______________
3) The electrons of which compound show the greatest
change in energy?
4) Is the color produced by the metal or the nitrate?
Explain.