Instructions
Instructions
The puzzle pieces are called Lewis
dot symbols. You can use them to pair up electrons to
TheDot
puzzle
pieces-are
called Lewis dot symbols. You can use them to pair up elec
construct
models
molecules.
Connect
the of
Dots:
Lewis
Symbols
Instructions
construct models of molecules.
H N H
Purpose: To investigate the role of electrons
in covalent bonding.
Materials: Lewis dot puzzle pieces
H N H
H
Instructions: The puzzle pieces are
called
Lewis dot structure
H
Lewis dot symbols. You can use them for
to pair
NH3up
Lewis dot structure
electrons to construct models of molecules.
for NH3
Part
Create Molecules
Part
1: 1:Create
Molecules
1. Use the puzzle pieces to construct
molecules.
Then draw the Lewis dot structure for
1: these
Create
Molecules
1. Use the puzzle pieces toPart
construct
these molecules.
Then draw the Lewis dot structure
each molecule, leaving off the outline of each puzzle piece.
for each molecule, leaving1.offUse
thethe
outline
of pieces
each puzzle
piece. these molecules. Then draw the Lewis do
puzzle
to construct
for each
leaving off the outline of each puzzle piece.
PH3
HOCl
F2 molecule,
CH3Cl
PH3
HOCl
F2
CH3Cl
2. Use the puzzle pieces to create more molecules here. Draw the Lewis dot structure of
2. Use the puzzle pieces to create more molecules in your journal. Draw the Lewis dot
each
molecule and write 2.
the Use
molecular
formula
below
it. more molecules here. Draw the Lewis dot str
the puzzle
pieces
to create
structure of each molecule and write the molecular formula below it.
eachHHmolecule
and
write
a. a.UseUse
one
S atom
atoms
you
need.the molecular formula below it.
one
S atomand
and as
as many
many
atoms
as as
you
need.
one
atomand
and as
as many
many
FFatoms
you
need.
a. Use
one as
S as
atom
and
as many H atoms as you need.
b. b.UseUse
one
SiSiatom
atoms
you
need.
c. Use two O atoms and as many H atoms as you need.
b. UseHone
Si atom
as many F atoms as you need.
c. Use two O atoms and as many
atoms
as youand
need.
c. Use
two O atoms
as many
H atoms
you its
need.
3. Use the puzzle pieces to construct
a molecule
with theand
molecular
formula
C2H6.asDraw
Lewis dot structure and its structural formula.
4. Use the puzzle pieces to construct all possible isomers of C3H8O. Draw Lewis dot structures on
your journal page. Do the molecules follow the HONC 1234 rule?
5. Use the puzzle pieces to design your own molecule with at least five carbon atoms. Draw
its Lewis dot structure. What is the molecular formula of your designer molecule? Does
it obey the HONC 1234 rule?
3. Use the puzzle pieces to construct a molecule with the molecular formula C2H6. Draw
its Lewis
dot structure
structural
formula
3. its
Use
the puzzle
piecesbelow.
to construct a molecule with the molecular formula C
Part
2: Valence
Electronsand
Remove 1 card of each type of atom.
Sort them
according to
theits
periodic
table. formula below.
its Lewis
dot structure
and
structural
1.
2.
3.
4.
Draw your card sort. Include the symbol for the element and the dots.
List two patterns that you notice in your table.
Making Sense: Explain why the HONC 1234 rule works.
If You Finish Early: Draw the Lewis dot structures for two different molecules with the
molecular formula C2H7N.
mells
Living By Chemistry Teaching and Classroom Masters: Units 1–3
© Chemistry
2010 Key Curriculum
• Worksheet126 Unit 2 Smells
Living By
TeachingPress
and Classroom Master
© 2010 Key Cur
Lesson 4 • Worksheet