Flame Test

Flame Test
Introduction:
The purpose of this lab was to see how different compounds can change color while in a flame and with this color, I can identify the compound. The test involve puttingsample element and see what color appears. Also Thermal excited electron goes from low to high energy level which raises the color but when the excitation ends electron gets to lower level which makesthe color back to normal. In order to determine the identity of several unknowns, I will perform flame tests and then use my data and observations.
Purpose:
To determine the metal based oncharacteristic color in a flame
Materials:
6 small test tubes
Sodium chloride (NaCl)
Calcium chloride (CaCl2)
Lithium chloride (LiCl)
Copper (II) chloride (CuCl2)
Potassium chloride (KCl)
Strontiumchloride (SrCl )
Gas Burner
Procedure:
1. Make a two-column data table. Label the column Metal and Flame color. Enter the metal’s name for each solution in the first column
2. Label each of thefive test tubes with the names of the solutions. Add 1 mL of each solution to appropriate labeled test tube
3. Dip one of the cotton ends of a cotton swab into the sodium chloride solution and the holdit briefly in the burner flame. Record the color of the flame
Data and Observations:

Metal Flame Color
Sodium chloride (NaCl)
Orange
Calcium chloride (CaCl2)
Orange with little greenLithium chloride (LiCl)
Red
Copper (II) chloride (CuCl2)
Green
Potassium chloride (KCl)
Peach
Strontium chloride (SrCl )
Red

Conclusion:
Flame tests are useful means of determining thecomposition of substances. The colors produced by the flame test are compared to known standards. The color of the flame and component colors is unique for each element. Flame analysis is based on thephysical and chemical principle that atoms—after being heated by flame—return to their normal energy state by giving off the excess energy in the form of light. The frequencies of the light given off...