1. WEDNESDAY, SEPTEMBER 30 TH Do now please: On your table, you’ll find a pre-test for our next unit Please complete as much of it as you can – you may remember some of it from coordinated science! You can use your periodic table When you’re done, put in the basket at the front

2. COLLEGE IN THE HIGH SCHOOL Get Everett Community College credit for this class! Visit http://www.everettcc.edu/CHS for more information and to registerhttp://www.everettcc.edu/CHS Registration deadline: October 12 th

3. NEW VOCABULARY Electron shell: a place where an electron may be found in an atom Valence electron: an electron in the outermost shell of the atom Core electron: any electron that’s not a valence electron

4. 1.How does the number of valence electrons change as you move down a group? 2.How does the number of valence electrons change as you move across a period? 3.Which group has the most valence electrons? 4.What do you know about the reactivity of the group you named in number 3? 5.What do you think electrons have to do with your answers to #3 and #4? 6.What other patterns did you notice? ANSWER THE FOLLOWING IN YOUR NOTEBOOK COPY THE QUESTIONS DOWN.