1. ATOMIC CONCEPT OCTOBER 2, 2015

2. QUIZ 4 – 10/02/2015 Clear your desk PENCIL only 10 minutes Individual work and you are silent If you finish early, silently review your work NOTE: make sure to complete the header

3. NOTEBOOK CHECK NOTEBOOK CHECK 2 TODAY PUT IN GREEN BIN AT END OF CLASS ◦ REGENT PERIODIC TABLE ◦ ATOMIC TIMELINE ◦ DO NOW FOR 9/28 ◦ DO NOW FOR 9/30 ◦ DO NOW 10/1 ◦ COMPLETED QUESTIONS TO CONSIDER QUIZ 4

4. AIM How can bright-line spectrum be utilized to identify elements in a star?

5. Three Views Spectrum Demonstrator http://astro.unl.edu/classaction/animations /light/threeviewsspectra.html http://astro.unl.edu/classaction/animations /light/threeviewsspectra.html ◦ Point the flashlight directly at light bulb ◦ Point the flashlight at the gas cloud ◦ Point the flashlight at the gas cloud away from the light bulb

6. SPECTRUM CONTINUOUS SPECTRUM EMISSION SPECTRUM ABSORPTION SPECTRUM

7. BRIGHT-LINE SPECTRUM EMISSION SPECTRUM

8. WHAT IS IN THE UNKNOWN?

9. REGENT

10. HW-01-02 Q1: State the total number of valence electrons in a cadmium atom in the ground state.

11. Q2 Identify all the elements in the mixture

12. Q3 Explain, in terms of both electrons and energy, how the bright-line spectrum of an element is produced.

14. Q4 List all elements present in unknown sample W.

15. Q5 List all elements present in unknown sample X.

16. Q6 List all elements present in unknown sample Y.

17. Q7 List all elements present in unknown sample Z.

18. Q8 – REAL LIFE APPLICATION How can bright-line spectrum be utilized to identify elements in a star?

19. SUPERMOON LUNAR ECLIPSE

20. SUMMARY TO TODAY LESSON

21. HOMEWORK REMINDER ◦ Study for Quiz 3