1. Launch: 10/27
 Grab your binder and immediately take a seat
 Place homework (practice questions) on desk
1. Label the following compounds as either ionic, covalent, or
metallic
i. LiF iii. Co v. CO vii. Cl2 ix.HI
ii. NH3 iv. MgBr2 vi. LiOH viii. NaCO3 x.AgNO3

2. What happens during
ionic bonding?
Mr. Heffner
10/27/09

3. What is an ionic bond?
 Ionic bonds are…
 formed between a metal and a nonmetal when
electrons are exchanged.

4. What happens during ionic bonding?
 Video summary
1. Valence electrons collide
2. Electron is exchanged
3. Two ions are formed
4. Opposites attract!

5. What happens during ionic bonding?
1. The valence electrons collide

14. What happens during ionic bonding?
1. The valence electrons collide

15. What happens during ionic bonding?
2. A valence electron is exchanged
1 valence e- 7 valence e-
Octet Rule = everyone wants 8!

16. What happens during ionic bonding?
3. Two ions are formed
 Cation: positively (+) charged atom, lost an electron
 Always the metal
Positively charged
Cats make me
happy!
8 valence e-

17. What happens during ionic bonding?
3. Two ions are formed
 Anion: negatively (-) charged atom, gained an electron
 Always the nonmetal
Negatively charged
anion = a
negative ion
8 valence e-

18. What happens during ionic bonding?
4. Opposites attract!
 Electrostatic attraction holds the two atoms together

19. Summary
1. Valence electrons collide
2. Electron is exchanged
3. Two ions are formed
4. Opposites attract!

20. Practice Questions
1. What is an ionic bond?
2. What is a cation?
3. List three ways anions are different from cations.
4. In an ionic bond, what type of ion is the metal?
5. In 1-2 sentences explain why atoms stick together in an
ionic bond.

21. Ionic Bonds Storybook
 Make the book
 Make a title page – your name, block, and date
 Fill in the pages with the 4 steps of ionic bonding
 Write the step across the top
 On the left page, draw a picture
 On the right page, write the story
 Be sure to include the following terms:
• ionic • cation
• valence • anion
• exchanged • electrostatic

22. Exit Slip
1. Unlike in covalent compounds, atoms in ionic
compounds
a. share valence electrons to obtain a stable octet.
b. are always a nonmetal and a nonmetal.
c. exchange valence electrons and form ions.
d. are always two metals

23. Exit Slip
2. What are anions?
a. positively charged atoms
b. negatively charged atoms
c. atoms with more protons than electrons
d. atoms that have gained a proton

24. Exit Slip
3. The picture above is an example of a
a. cation
b. anion
c. isotope
d. nonmetal

25. Exit Slip
4. Why are cations in an ionic bond positively
charged?
a. because the metal loses an electron and becomes
positively charged.
b. because the nonmetal gains an electron and
becomes positively charged.
c. because metals have a higher electronegativity than
nonmetals.
d. because the electrostatic repulsion between the two
atoms pushes them apart.

26. Exit Slip
5. What holds atoms together in an ionic bond?
a. shared pairs of electrons between the atoms
b. exchanged electrons result in two positively charged
ions form a bond
c. the sea of electrons acts like a glue to keep the
nuclei together
d. electrostatic attraction between anions and cations

27. Homework
 Finish storybook
 Study your flashcard!