1. Celebrate Monday!
5 min min total

4. Objective:
Read and evaluate newspaper articles to announce the new atomic theory.

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

6. Brilliant Believer Wonderful Worker Ima Student 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:
Brilliant Believer
Wonderful Worker
Ima Student

7. Your 2 cents wanted….

8. Let’s Join in!!!

9. A Weird and Wondrous Place

10. Dimitri Mendeleev : 1860
Organized the 60 known elements into a table based on elements increasing mass
Grouped elements
with similar
properties in
columns
Left spaces for
unknown elements

14. Didn’t even know about protons
Mendeleev’s Problem
Didn’t even know about protons

15. A Groups have same # of valence electrons
Group 1 = 1 electron
Group 2 = 2 electrons
Group 8 = 8 electrons
Except for He, it has 2 electrons
3, 4, 5, 6, 7

17. Putting it all together..
5 minutes min

18. The Periodic Table

19. Roman Numerals

21. Mendeleev’s Table

22. Solitaire Made a “Deck of Cards” of Elements Lined the cards up in order of increasing mass Arranged elements Rows by increasing mass Columns by similar properties

23. Periodic table Mendeleev’s chart was renamed the periodic table
Is an arrangement of elements in columns, based on a set of properties that repeat from row to row

24. Mendeleev didn’t know about atoms
All atoms of element have same number of protons
Atoms of two different elements could not have the same number of protons