Flame Test Experiment

 

 

 

Purpose:To demonstrate and classify the characteristics of a chemical reaction. 

Objective:Describe the difference between a physical and chemical change.

Data Table:

Chemical Compounds:	Elements Involved:	Characteristics:
Barium Chloride	Barium	Green
Calcium Chloride	Calcium	Orange
Lithium Chloride	Lithium	Red-Orange
Potassium Chloride	Potassium	Purple
Sodium Chloride	Sodium	Yellow
Strontium Chloride	Strontium	Crimson Red
Unknown???

video of a flame test including of other elements: Link 

 

 

Analysis Questions:

 

 

1.) What indicators (at least 3) determine that a chemical change (or reaction) has occurred?                                                                                                                                 

    - The color changed. It went from a liquid to a gas (vapor).

2.) What is emitted when a chemical change takes place in the flame test?                            

    - The color changes.

3.) What group, from the periodic table, do these elements exist?

Barium: 2

Calcium: 2
Lithium: 1
Potassium: 1
Sodium: 1
Strontium: 2                                                                                                                            4.) Do any two elements give the same spectrum of color? Explain why?                                    - None of the give off the same spectrum of color because they were all different elements.

5.) Recall what a catalyst is in a chemical reaction.  What was the catalyst in these reactions?                                                                                                                                

    - The catalyst in this chemical reaction is the Bunsen burner.