Launch: 10/23   Grab your binder and immediately take a seat

  Sit quietly and read the statement on the slip

Detectives   Everyone stands up

  Walk around the classroom and find another student

  Read your statement out-loud to the other student

  Listen as the other student reads to you

  Swap slips and find a new student

  Repeat!

What is are the 3 types of chemical bonds?

Mr. Heffner 10/22/09

Jigsaw Activity   In this activity, the class will break into three

groups.

  Your first task is to work with your group and become an expert on a type of chemical bond.

  Then you will be responsible for teaching others about what you learned.

Jigsaw Activity   Part I: Reading (12 min)

1.  Read your assigned passage silently and individually underline important words (4 min)

2.  As a group, point out important parts of the passage and discuss what they mean (2 min)

3.  As a group, fill in the graphic organizer based on the information from your passage (6 min)

Jigsaw Activity   Part II: Presenting (9 min)

1.  First, the experts on ionic bonding will present their findings while the group members take notes (3 min)

2.  Second, the expert on covalent bonding will present their findings while the group members take notes (3 min)

3.  Third, the experts on metallic bonding will present their findings while the group members take notes (3 min)

Ionic bonds   What happens to the electrons?

  They are exchanged

  What types of elements do they form between?   Metals and nonmetals

  What is an example?   Salt = NaCl

Covalent bonds   What happens to the electrons?

  They are shared

  What types of elements do they form between?   Nonmetals and nonmetals

  What is an example?   Stomach acid = HCl

Metallic bonds   What happens to the electrons?

  They are shared, free in the “sea”

  What types of elements do they form between?   Metals and metals

  What is an example?   Copper wire = Cu

Guided Practice   Are the following compounds ionic, covalent, or

metallic?

1.  NaI   Na = metal

  I = nonmetal

2.  HF   H = nonmetal   F = nonmetal

3.  Au   Au = metal

Ionic

Covalent

Metallic

Practice Questions   Practice Questions Worksheet

  Answer in complete sentences!

Exit Slip 1.  Electrons are exchanged

a.  in covalent bonds. b.  in metallic bonds.

c.  in ionic bonds. d.  none of the above

Exit Slip 2.  Ionic bonds form between which two types of

elements? a.  halogens and noble gases b.  nonmetals and nonmetals c.  metals and nonmetals

d.  transition metals and alkali metals

Exit Slip 3.  What type of bond is found in Br2?

a.  metallic b.  covalent

c.  Ionic d.  none of the above

Exit Slip 4.  Which of the following is an example of a metallic

compound? a.  Fe b.  CCl4 c.  MgBr2

d.  Xe

Exit Slip 5.  Which of the following is an example of a covalent

compound?

a.  HBr b.  NaI

c.  Ag

d.  AlCl3

Homework   Finish practice questions

  Mind map