Water Sample

Topics: Water, Sodium, Bottled water Pages: 3 (448 words) Published: July 31, 2013
Lab Report
Lab Report
Lab Report
Flame Spectroscopy: Applying Leap
a Quantum
Answer the following questions about the results of this activity. Record your answers in the boxes. Send your completed lab report to your instructor. Don’t forget to save your lab report to your computer!

Lab Activity 1
Sample| Number of Bands| Colors Present|
Cesium CalibrationStandard| 14| Grey, aqua, green, yellow, orange, red| Cesium Spectrum from Chart| 12| Aqua, green, yellow, orange, red|

1. Is the flame spectrum from the Cesium Calibration Standard similar to or different from the spectrum from the Sample Metals Spectrum Chart?It is almost identical.

It is almost identical.

2. What color would you expect cesium to be, based on the spectral data? What would you have to know to determine this?

Orange-red because that is where most of the concentration is.

Orange-red because that is where most of the concentration is.

|

Lab Activity 2
Record the number and color of the flame spectra bands for each water sample. Use the Flame Spectra Chart and Symbol table below to identify the elements (metals) in the different water samples.

Symbol| Name|
Cd| Cadmium|
Li| Lithium|
Na| Sodium|
K| Potassium|
Rb| Rubidium|
Cs| Cesium|
Hg| Mercury|
Ne| Neon|

Sample| Number of Bands| Colors Present in Spectrum| Probable Elements In Sample| Spring Water Sample| 8| Grey, aqua, yellow, red| Li, Cd| Bottled Water Sample| 2| Yellow| Na|
Mineral Water Sample| 9| Green, yellow, red| K, Na|
Pure or Distilled Water Sample| 0| Nothing| Nothing|

3. List the probable metals in each of the water samples.Spring Water – Lithium and Cadmium Bottled Water – Sodium
Mineral Water – Potassium and Sodium
Pure or Distilled - Nothing

Spring Water – Lithium and Cadmium
Bottled Water – Sodium
Mineral Water – Potassium and Sodium
Pure or Distilled - Nothing

4. Use the web to determine...
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