CP23 – Levels

Date

• Tuesday, October 17th

Class Business

• scientist questions quiz “review”
• most challenging idea?

CER Worksheet

• Claim / Evidence / Reasoning Worksheet
• What did each scientist contribute?
• Possible to condense to one word?

New Idea – Energy Levels Simulation

• Go to this site [LINK] and click the Download button (save to your desktop).
• To open, find the icon, hold down the Control button on your keyboard, click the icon, and choose Open.
• This will pop up a window, which you should then dismiss by clicking Open, and the simulation should load.
• Click the Multiple Atoms tab, choose the Continuous button, and set the electron percentage fairly low, around 20%.
• On the bottom at the right, check the spectrometer button.  Take a look at this PDF [LINK] for some other comments about what you’re seeing.
• Make some observations (written in your notes) as the simulation runs for a few minutes.
• Then change the drop down menu to a new element and watch a few more minutes. Play around. Feel free to configure your own element.
• Work on making connections between Bohr’s model and the emission spectra of the elements.

New Idea – Emission Spectrum Simulation

• Go this this web site [LINK]
• Take notes on the connection between the spectra and energy levels
• Questions? Thoughts?
• HELP for FLASH on Chrome [LINK]
• HELP for FLASH on Safari [LINK]

Pulling Together

• What is the meaning of a line spectrum?
• How is this proof of energy levels?

Homework

• Watch both simulations
• Take notes on BOTh simulations
• [see tech for support if not playing]
• Note – Test Tuesday, Oct 31 (Unit 4)