Transcript Ch6B Jeopardy game

Final
Bonds Lewis
Structures
Lab
Potpourri
100
100
100
100
200
200
200
200
300
300
300
300
400
400
400
400
500
500
500
500
100 Bonds
Define covalent bond
Answer
Bonds
100
attraction between
atoms that results
from sharing
electron pairs
200 Bonds
the bonded atoms have
an unequal attraction for
shared electrons
Answer
Bonds 200
polar covalent bond
300 Bonds
Classify each of the following
as PC, NPC or I bonds. Show
numerical proof. Indicate d- for
PC bonds.
Sr-Cl
All Play!
Cl-I Si-P Al-H
Answer
Bonds 300
Sr-Cl EN diff = 2.0, Ionic
dCl-I EN diff = 0.5, PC
Si-P EN diff = 0.3 NPC
dAl-H EN diff = 0.6 PC
400 Bonds
How many bonds each do C
and H have in a molecule?
Answer
Bonds
400
4 for C, 1 for H
500 Bonds
List 3 elements that
can have multiple
bonds (double and
triple bonds)
Answer
Bonds 500
Nitrogen
Carbon
Oxygen
100 Lewis Structures
List the ABE formula,
geometry, bond angles for
each of the following:
Answer
Lewis Structures 100
AB2E2, bent, 105o
AB5triangular bipyramidal, 90o and
120o
200 Lewis Structures
Show resonance for a
molecule of O3.
Answer
Lewis Structures 200
300 Lewis Structures
Draw Lewis structures, identify
ABE formula, geometry, bond
angles, polarity
NO2Cl
GeH4
Answer
Final Jeopardy
Draw a Lewis structure for ethyl
alcohol, C2H5OH
Answer
Final Jeopardy Answer
Lewis Structures 300
AB3, triangular planar,
120o, polar
AB4, tetrahedral, 109.5o,
nonpolar
400 Lewis Structures
For the models shown, list
ABE formula, geometry, bond
angles, assuming bonds are
polar, is molecule polar? (yes
or no)
All Play!
Answer
Lewis Structures 400
o
109.5
AB4, tetrahedral,
polar
AB2E2 bent,
o
105 ,
, yes
yes polar
500 Lewis Structures
Make models for the following:
BeCl2
SiF4
Answer
Lewis Structures 500
BeCl2
linear
SiF4
tetrahedral
100 Lab
What anion fizzes when HCl
is added to it, yet it does not
bleach KMnO4 soaked filter
paper?
Answer
Lab 100
The carbonate ion
2CO3
200 Lab
What lab test would you
perform to determine if an
unknown substance is either
MgCl2 or Ni(NO3)2. State
expected results for each
identity.
Answer
200 Lab
The AgNO3 precipitate test
would give a clear solution
with Ni(NO3)2 and a cloudy,
white precipitate with MgCl2
300 Lab
Write the formula of the
compound that has an
Orange/yellow flame and
bleaches KMnO4 soaked
filter paper.
Answer
300 Lab
Na2SO3
400 Lab
Circle all of the following that
are electrolytes:
H2SO4
NH4F
CH4
KBr
C6H12O6
Lab 400
H2SO4 is an acid. KBr and NH4F are
ionic compounds.
500 Lab
Describe 3 tests you could use to
differentiate between NH4NO3 and
K2CO3. Describe results expected
in each test.
Answer
Lab 500
•
test – add NaOH to (aq)
compound, moistened red
litmus over top turns blue
• Add HCl. If CO32- present,
will fizz.
• Flame test – K burns peach
4+
NH
100 Potpourri
all molecules have this type
of intermolecular attraction
Answer
Potpourri 100
London forces
200 Potpourri
Which of the following substances has
hydrogen bonding between its
molecules?
Answer
Answer for Potpourri 200
none – no bond btwn F and H
Yes – O-H bond
yes– N-H bond
300 Potpourri
Of the following substances,
which has the highest/lowest
boiling point?
C5H12
C3H8 C9H20 C4H10
Answer
Potpourri 300
• All are nonpolar
hydrocarbons, so lowest
molar mass (C3H8) has
lowest b.p. Highest molar
mass (C9H20) has highest
b.p.
400 Potpourri
Which of the following substances
has the highest boiling point.
Explain your reasoning.
Answer
Potpourri 400
This compound is polar with hydrogen
bonding between molecules. This
strong intermolecular attraction will
require more energy to break and move
molecules apart into gas phase.
CH4 is nonpolar.
CH3F is polar and has weak dipole-dipole
attractions only.
500 Potpourri
List the three types of
intermolecular forces in
order of increasing
strength.
Answer
Potpourri 500
Weakest: London forces (in all
molecular compounds)
Dipole-Dipole (all polar compounds)
Strongest: Hydrogen bonding (in
compounds with N-H, O-H or F-H
bonding)