The document discusses the structure of ionic compounds. It begins by explaining that ionic compounds appear as white crystals to the naked eye and have an alternating lattice structure of cations and anions on the atomic level. The ions are held together by electrostatic attraction. Students are then told they will do a lab rotating through stations on different ionic compounds.

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!