Solution
Describe the color of the flame
LiCl
NaCl
KCl
SrCl2
BaCl2
CuCl2
Unknown A
Unknown B
Solution
Describe the color of the flame
LiCl
NaCl
KCl
SrCl2
BaCl2
CuCl2
Unknown A
Unknown B
Solution
LiCl
NaCl
KCl
SrCl2
BaCl2
CuCl2
Unknown A
Unknown B
Describe the color of the flame
Flame Test Lab Conclusion Questions
Answer in complete sentences on p. 52 (below your data chart)
1. Was your hypothesis supported?
2. Make a claim to answer your research question.
Ex) “The effect of different elements on flame color is…”
3. Provide 2-3 pieces of evidence to support your claim.
Ex) “For example, when I burned lithium (Li)…but when I burned barium (Ba)…”
4. Explain your reasoning. This means provide an explanation for this claim/evidence. Use scientific vocabulary
and concepts from class in your answer!
Ex) “This happens because…”
5. Identify two possible sources of error in your experiment.
6. Draw a diagram to show what is happening to an individual atom when we burn it like this. Your diagram
should show three steps!
7. Reflect: Choose one of these options.
a) Give two real-world situations where it might be useful to understand how different elements affect the
color of a flame.
b) Describe how the flame test lab is different from the emission spectra we looked at on paper in the article
last week. Provide a possible explanation for why they are different.
c) We didn’t create a graph in this lab. Explain why it might be difficult to make a graph to show your data.
Is there a way you could have done it?
Flame Test Lab Conclusion Questions
Answer in complete sentences on p. 52 (below your data chart)
1. Was your hypothesis supported?
2. Make a claim to answer your research question.
Ex) “The effect of different elements on flame color is…”
3. Provide 2-3 pieces of evidence to support your claim.
Ex) “For example, when I burned lithium (Li)…but when I burned barium (Ba)…”
4. Explain your reasoning. This means provide an explanation for this claim/evidence. Use scientific vocabulary
and concepts from class in your answer!
Ex) “This happens because…”
5. Identify two possible sources of error in your experiment.
6. Draw a diagram to show what is happening to an individual atom when we burn it like this. Your diagram
should show three steps!
7. Reflect: Choose one of these options.
a) Give two real-world situations where it might be useful to understand how different elements affect the
color of a flame.
b) Describe how the flame test lab is different from the emission spectra we looked at on paper in the article
last week. Provide a possible explanation for why they are different.
c) We didn’t create a graph in this lab. Explain why it might be difficult to make a graph to show your data.
Is there a way you could have done it?
Flame Test Lab Pre-Lab
Copy and complete on p. 51
Question: What is the effect of elements on flame color?
Hypothesis: IF I burn solutions of different elements,
THEN ___________________________
BECAUSE _______________________.
Materials:
 10 mL each of LiCl, NaCl, KCl, SrCl2, BaCl2, CuCl2, Unknown A, and Unknown B
solutions
 1 test tube for each solution
 1 wooden splint for each solution, pre-soaked
 1 Bunsen burner
Procedures:
1. Remove a splint from a solution.
2. Hold the splint in a flame. Be careful not to catch it on fire!
3. Record the color of the flame.
4. Repeat for all solutions.
Flame Test Lab Pre-Lab
Copy and complete on p. 51
Question: What is the effect of elements on flame color?
Hypothesis: IF I burn solutions of different elements,
THEN ___________________________
BECAUSE _______________________.
Materials:
 10 mL each of LiCl, NaCl, KCl, SrCl2, BaCl2, CuCl2, Unknown A, and Unknown B
solutions
 1 test tube for each solution
 1 wooden splint for each solution, pre-soaked
 1 Bunsen burner
Procedures:
1. Remove a splint from a solution.
2. Hold the splint in a flame. Be careful not to catch it on fire!
3. Record the color of the flame.
4. Repeat for all solutions.