Emission Spectroscopy Lab

Warm up:  Do you think  the emission spectrum of Hydrogen is made of a continuous rainbow of colors or a set of individual colored spectral lines?  Why?

Hint: review your notes and your worksheet on the Hydrogen electronic transmissions, especially the Balmer Series.

These pictures show the difference between continuous, emission and absorption spectra.

Em-Abs-spectra

Why is the absorption spectrum the opposite (compliment) of the emission spectrum?

Study these specra before looking at the spectra from the gas discharge tubes.

 

EmissionSpectra-Hg-H-He

In the space below, draw the emission lines for H, He and Hg using colored pencils.

Hydrogen ________________________________________________________

 

Helium ____________________________________________________________

 

Mercury __________________________________________________________

 

Now look at the emission lines of the gas discharge tubes and put  Czech marks on your drawing  above each spectral line you were able to see.