1. Launch: 10/30
 Grab your binder and immediately take a seat
1. Draw the ion symbol for the following atoms? (Use
the 3-step method!)
i. O
ii. Br
iii. Mg
iv. Li
v. Al
2. Which of the above ions gain electrons?
3. Which of the above ions lose electrons?

2. What do ionic compounds
look like?
Mr. Heffner
10/30/09

3. What do ionic compounds look like?
 To the naked eye:
 Ionic compounds are
known as “salts”
 Table salt = NaCl
 White crystals

4. Ionic Bonding Review
1. Valence electrons collide
2. Electron is exchanged
3. Two ions are formed
 metal  cation (+)
 Na+
 nonmetal  anion (–)
 Cl–
4. Opposites attract!

5. What do ionic compounds look like?
 On the atomic level: Anion = Cl–
 Alternating pattern is
called a lattice
 like ladder
 What holds it together?
 electrostatic attraction
between cations and anions
Cation = Na+

6. Ionic Compound Stations
 Groups of 2-4; rotate through 4 stations
-Blue
-Crystals
-Granular
BeI2 Be2+ I- -Skin
irritant

7. Homework
 Have a fun and safe Halloween!