Wednesday, Oct. 8th, 2008

BIG IDEA: We’ve looked at electrons’ changes in the atom. The protons and neutrons can ALSO change!

1. Warm-up: See pg. 57 in the textbook. Answer the questions on pg. 57 for element number 82. Turn in homework while you are working on it.
2. Go over Big Idea and agenda for the day.
3. Debrief Technicolor Atoms Lab again, go over main point, that when electrons jump from energy level to energy level, they give off photons (packets of light). Different elements have different energy levels, so give off different colored packets of lights to make their own unique spectra. To move an electron from a lower to a higher energy level, you heat the element (flame from Bunsen burner).
4. Look at the following website: http://www.colorado.edu/physics/2000/quantumzone/bohr.html Go over the most important pieces: the applet showing how electrons jump from one energy level to another, and the Dave’s Whizzy Periodic Table that show the shell and nuclear view of elements from the periodic table as well as the associated spectrum. You can also show this website to compare spectra: http://members.misty.com/don/spectra.html
5. Return to Penny Lab: Could you make gold if you could change the electrons? If you could change the neutrons? If you could change the protons? CAN we even do this stuff? Think-Pair-Share. Discuss.
6. Chemcatalyst: Island of Stability, pg. 73.
7. Wrap-up with return to Big Idea of the day, and assign homework.

Homework: 1) Explain the Technicolor Atoms lab to someone at home. Write down what you say, and two comments/questions from that person. Get signature. 2) Don’t forget that your sources of error and your typed revision of your procedure is due tomorrow.