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
| Ba , Cl | Yellow |
Calcium Chloride
| Ca , Cl | Orange |
Lithium Chloride
| Li , Cl | Hot Pink |
Potassium Chloride
| K , Cl | Light Purple |
Sodium Chloride
| Na , Cl | Orange / Yellow |
Strontium Chloride
| Sr , Cl | Red |
Unknown???
| Ba , Li | Hot Pink and Yellow |
Analysis Questions:
1.) What indicators (at least 3) determine that a chemical change (or reaction) has occurred?
answer: It changes color, smell (odor), and heat sucked in and out are the indications.
answer: It changes color, smell (odor), and heat sucked in and out are the indications.
2.) What is emitted when a chemical change takes place in the flame test?
answer: We can tell by the color when it is made.
answer: We can tell by the color when it is made.
3.) What group, from the periodic table, do these elements exist?
answer: alkaline earth metals = Ba, Ca, Sr alkaline metals = Li, K, Na non metals = Cl other metals= Al
answer: alkaline earth metals = Ba, Ca, Sr alkaline metals = Li, K, Na non metals = Cl other metals= Al
4.) Do any two elements give the same spectrum of color? Explain why?
answer: No
answer: No
5.) Recall what a catalyst is in a chemical reaction. What was the catalyst in these reactions?
answer: Flame
answer: Flame
Flame test picture using Ba, Ca, Li, K, Na, and Sr
