Flame Test Lab Conclusion

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Register to read the introduction… Which metals produce similar flame colors (according to your naked eye)?

NaCl and NaNo3 both turned the color orange.

2. What metal ions are in the unknown solutions A and B from the barrels on the vacant lot? Clearly, and in detail, explain your reasoning.

The metal ions BsCl and LiCl are in the unknown solutions A and B from the barrels on the vacant lot.

3. A student performed flame tests on several unknown substances and observed that all of the flame colors were shades of red. What could the student do to correctly identify these substances?

The student could match their observances to the specific color a flame would make when it comes into contact with a substance.

4. During a flood, the labels from three bottles of chemicals were lost. The three unlabeled bottles of white solids were known to contain the following substances: strontium nitrate, ammonium carbonate, and potassium sulfate. Explain in great detail how you could easily test the substances and re-label the three bottles. (Hint: Ammonium ions do not provide a distinctive flame color).

To easily test the substances and re-label the three bottles you could create a flame with the substances and use diffraction glasses to find the substance’s
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6. How would you characterize the flame test with respect to its sensitivity? Give a reason why the flame test is sometimes invalid.

The flame test could possibly read invalid if there is still a trace of the previous substance still in the burner or if there is a trace of the substance in the current substance that is being tested.

7. Based on your results and observations would this method be practical to determine the metals in a mixture? If not, why not. Explain your answer.

Based on my results and observations this method would not be practical to determine the metals in a mixture because you wouldn’t know which color is for which substance in the mixture.

8. Using the information learned about what color would you predict that copper nitrate would burn? Explain your answer.
I think copper nitrate would burn at a blue/green color, because during the flame test copper burned at a blue/green color.

9. Some stores sell “fireplace crystals.” When sprinkled on a log, these crystals make the flames red, green, and violet. Explain how these crystals can change the flame’s color. What ingredients do you expect them to

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