1. Chemistry – Dec 1, 2017 Objective – Compare Ca and Ba.
P3 Challenge-
Compare Ca and Ba.
A) Which is larger and why?
B) Which has the greater ionization energy and why?
Objective –
Review - obtain the 2 sheets on your table
Get out Periodic Trends WS for Hmk Check

2. Chemistry – Dec 1, 2017 Today’s Objective – Assignment:
Review
Assignment:
Study for Unit 3 Test on Dec 11 and Final on Dec 18
Agenda
Homework Review
Review Worksheet

3. Homework Review 2. Ne, Al, S, O (noble gases = 0)
1. O, C, Al, K
2. Ne, Al, S, O (noble gases = 0)
3. F is smaller atom, higher on PT, harder to remove electron from F than I
4. same outer electron configuration only varies by size
5. a. decrease b. increase c. increase
6. Atomic Radii increase going down PT, Re: larger n value and larger orbitals
7. Ionization E increase going L R, Re: same size, but Z is increasing.

4. Homework Review b. Ca Ca is smaller c. Na Na is smaller
8. a. Al Al is lower on PT, larger n
b. Na same period, Al is smaller due to higher Z
c. S S is lower on PT, larger n
d. O same period, O is larger because it’s to the left with lower Z
e. Br Br lower on PT, larger n
f. Ca Ca lower on PT, larger n
9. a. Be I.E increases L R
b. Ca Ca is smaller
c. Na Na is smaller
d. Ar Ar noble gas, I.E increases L R
e. Cl I.E increases L R
f. Li Li is smaller

5. Homework Review 10. a. Ga Ga to the right b. Br Br to the right
c. O O to the right
d. Sr Sr is above Ba
e. Cl Cl is to the right
f. O O is above S
11. a. Ca Cations get smaller
b. Br– anions get larger
c. Na+ Isoelectronic, Na has lower Z
d. Ba+2 Ba is below Sr
e. Cl– isoelectronic, Cl has lower Z
f. S–2 S is below O

6. Exit Slip - Homework
Exit Slip: Calculate the atomic mass for chlorine using the following data. SHOW WORK.
Chlorine-35 m = ab = 75.78%
Chlorine-37 m = ab = 24.22%
What’s Due? (Pending assignments to complete.)
Study for Unit 3 Test on Dec 11 and Final on Dec 18
What’s Next? (How to prepare for the next day)
Read Holt p