Name:_______________________________ Date:___________
Make Your Own Spectrum Chart
1. Calibrate your spectroscope by looking up at the fluorescent
lights in the classroom. Move your spectroscope slowly up and
down until a bright green and a bright violet line appear just
under the scale inside your spectroscope.
2. The bright green line should appear at around 550 nm and the
bright violet line should appear around 440nm. If the lines
appear around 460nm and 570nm for example, then all your
observations need to be adjusted by subtracting 20nm for each
reading.
The bright green line occurs at _______________ the bright violet
line occurs at ____________, therefore I must add or subtract
____________ from each measurement.
On the chart below, record your element or compound and then
using your colored pencils, draw a line where each one of your
spectrum lines appears. When you are finished compare your data
to a spectrum chart.
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QUESTIONS:
1. How did your spectrum lines compare with the spectrum lines
on the “official” chart? Did you fail to see any lines?
2. Sodium is a common containment in many spectrum tubes.
Was there evidence that any of the tubes you viewed
contained sodium?
3. Use your spectrum chart to identify some given elements.
Your teacher will place three different tubes into the holder
and you need to identify them using your chart.
a. ___________________
b.___________________
c.___________________
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© EISCO SCIENTIFIC ● www.eiscosci.com
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