1. QQ: Make a timeline that shows the order of the major developments in atomic theory. Include the scientist’s name and what their discovery.

3. Make a list of these scientists
Make a list of these scientists. Beside each scientist, write the name of his theory.
Democritus
Aristotle

4. 3. Dalton

5. 4. Thomson
5. Rutherford

6. Bohr
7. Schrodinger

7. Objective: I understand the nature and behavior of an atom’s structure.

8. 97.5%
Zinc
95% Cu

9. Vocabulary Quiz

11. Electron Configuration
* how electrons are arranged

12. Orbital Region where there is 90% probability of finding an electron.
Can’t pinpoint the location of an electron.
Density of dots represents degree of probability.

13. * How much energy each electron contains
Energy Levels
* How much energy each electron contains
High
Low

14. Ground State: least energy & most stable
Excited State: gained energy
& moved out; Less stable

15. The outer energy level of each orbit strives to be filled
The outer energy level of each orbit strives to be filled. The outer energy level is most stable when they have 8 electrons.

16. Energy level
# electrons 1 2 8 3 18 4 32
2n2

17. Valence Electron
* Outer most shell
* Most likely to react

18. Valence electrons

19. Work on your news article. Remember: Newspaper format
Scientist & His Discovery
Year of Discovery
Previous Theories
Picture
Quality of Product
New Information
15 min

20. Ima Student Wonderful Worker Brilliant Believer Article #
Average Score:
Exceeds
Expectation
3 points
Meets
2 points
Needs
Improvement
1 point
Not
Seen
0 points
Looks like
a paper
It is clear what scientist is being discussed
Year of discovery
Scientist’s discovery is accurately described
It is clear how this new theory is different from previous theories
Appropriate picture is present
Contains info not presented in class
Quality of project
Positive comment:
Wish for next time:
Ima Student
Wonderful Worker
Brilliant Believer