Agenda Dec 2, 2016
Slip quiz 1
Naming Molecular Compounds Pogil
Some Chemical Reactions
4 stations to observe a variety of chemical reactions
Teacher demonstrations
Homework
Slip Quiz 1.
1. Write the structural formula for methane, CH4(g)
2. What does the (g) stand for in the formula
above?
3. What would the molecular formula be for the
following structural formula:
4. What do the : represent here?
Slip Quiz 1.
1. Write the structural formula for methane, CH4(g)
2. In the formula above (g) tells us that the molecule
is in the gaseous state or gas phase.
Slip Quiz 1.
3. What would the molecular formula be for the
following structural formula:
P2O5
W4) The 2 dots represent lone pairs of electrons
(valence electrons that are not involved in a
covalent bond).
Naming Molecular Compounds
Non-metals bonded to non-metals
Covalent bonds
12. Share your rough draft of how a prefix is
modified when being used to name some
molecular compounds.
Naming Molecular Compounds
Non-metals bonded to non-metals
Covalent bonds
12. Share your rough draft of how a prefix is
modified when being used to name some
molecular compounds.
12.
If a prefix ends in vowel and the element begins
with a vowel, the vowel on the prefix is
removed.
Vowels are generally not repeated.
13.
Nitrogen tri-iodide is easy to say even though
there is a repeated vowel.
If a prefix ends in vowel (a or o) and the
element begins with a vowel (o), the vowel on
the prefix is removed.
14.
Binary molecular compounds contain 2
non-metallic elements only.
15.
1) Binary molecular compounds can be
recognized because they contain only 2
elements and both elements will be
nonmetals ( or a metalloid with a nonmetal).
2) Write a prefix in front of the name of the first
element that corresponds with the subscript
for than element, unless there is only one
atom of the first element. In that case just
write the name of the first element.
15.
3) Write the prefix corresponding to the
subscript for the second element in front of the
name of that element.
4) If a prefix ends in either an “a” or an “o” and
the name of the element begins with an “o”,
drop the final vowel from the prefix.
5) Remove the ending from the name of the
second element and replace it with the suffix
-ide.
16.
FeI3
Fe is a metal
Not a molecular
Compound
ICl5
HBrO4
Yes, rules
apply
Not binary
rules do not
apply
17. Use the rules to name the molecular compounds.
Molecular formula
PBr3
SCl4
N2 F2
SO3
BrF
Molecule name
17. Use the rules to name the molecular compounds.
Molecular formula
Molecule name
PBr3
Phosphorus tribromide
SCl4
Sulfur tetrachloride
N2 F2
Dinitrogen difluoride
SO3
Sulfur trioxide
BrF
Bromine monofluoride
18. Use the rules to write the molecular formulas.
Molecular formula
Molecule name
Disulfur decafluoride
Carbon tetrachloride
Oxygen difluoride
Dinitrogen trioxide
Tetraphosphorus
heptasulfide
18. Use the rules to write the molecular formulas.
Molecular formula
Molecule name
S2F10
Disulfur decafluoride
CCl4
Carbon tetrachloride
OF2
Oxygen difluoride
N2O3
Dinitrogen trioxide
P 4 S7
Tetraphosphorus
heptasulfide
18. Use the rules to write the molecular formulas.
Some
of
these
are not
followi
ng the
“Octet
Rule”
Molecular formula
Molecule name
S2F10
Disulfur decafluoride
CCl4
Carbon tetrachloride
OF2
Oxygen difluoride
N2O3
Dinitrogen trioxide
P 4 S7
Tetraphosphorus
heptasulfide
Chemical Reactions Stations
Pink Station - test-tubes and pipettes
Yellow station - beakers and pipette
Brown station - electric circuit involving petri dish of
salt solution mixed with universal indicator
Blue station - metals with acid in test-tubes
Stay at your assigned station until told to do otherwise
Safety is everyone’s
responsibibility
Goggles
Glove for one person at blue station
Work carefully - gently
Follow clean up instruction so next group can
start with a clean testtube/beaker/pertridish
During the demonstrations
Record what you see and or hear, what you
think might be the products of the reactions
Homework - start studying for final
Study Guide packet to take home this weekend
Class meetings remaining:
Tuesday Dec 6 - writing and balancing chemical equations
Thursday Dec 8th - Classifying chemical reactions
Monday Dec 12th - Final Review - you should have worked
through the Study Guide packet completely once by this date
Wednesday Dec 14 after your Per. 2 final - Electronegativity
graphing re-do if necessary.
Final is on Friday December 16th.