a detailed set of solutions to textbook problems related to simple molecule compounds. diagrams, problems, text.

1. Building Molecules
CHEMISTRY
MRS. GALL
INKSTER HIGH SCHOOL

2. Today’s Lesson Steps
 Silent Do Now (Label Paper with today’s problems
listed on the board)
 Discuss Do Now
 Discuss Today’s Expectations
 Frontal Teaching:
 Build A Molecule: Simulation Quiz
 Naming Ionic and Covalent/ Molecular Compounds
 Individual and Small Group Practice
 Homework

3. Build A Molecule: Simulation Quiz
1. Load the simulator
2. Run the simulation
3. Open the ―Collect Multiple‖ screen
4. Complete the 4- part quiz
5. Show Mrs. Gall (or chosen student assistant) to
earn credit

4. www.phet.colorado.edu OR…
 www.google.com
 Phet colorado chemistry simulation

6. Lab Credit: Due Today
Complete all four of the
―Molecule Collection‖
Tasks on the right side of
the screen for 4 points
credit: LAB.
Due in class today.
You must reset the section
before allowing another
student to complete the tasks.
You must complete the tasks
on your own, but you may
have guidance from other
informed people.

7. ―Tech Tuesday‖: 12 problems
 Page 183 #19 a b c d : Name the compounds
 Page 184 #20 a b c d: Write formulas
 Page 207 #9 a b c d: Name the compounds
 Holt Chemistry textbook (black cover, heated test
tube graphic on front)

8. Online Resources for naming compounds
 http://misterguch.brinkster.net/ionic.html
 http://misterguch.brinkster.net/covalentcompounds
.html
 http://chemistry.about.com/od/nomenclature/a/no
menclature-ionic-compounds.htm
 http://chemistry.about.com/od/nomenclature/a/co
valent-compound-nomenclature.htm
 OF COURSE, YOU CAN ―GOOGLE IT‖:
 NAMING IONIC COMPOUNDS
 NAMING COVALENT COMPOUNDS

9. Rationale: Why are we ―skipping around‖ in the book?
 1. We are working on both types of compounds at
once, because I’ve found that it is more useful.
 2. We are naming compounds before we discuss the
ways and reasons things bond because:
 A. We’ve already covered those concepts; the review may feel
boring
 B. Knowing you can ―do this‖- the ―plug and chug‖ sort of just‖
go through a process‖ tasks- you gain
confidence, experience, and knowledge. The reasons make
more sense when you know what you’re expected to do.

10. Textbook Resources: Chapters 5 and 6
 Chapter 5, section 3: pages 176 – 180
 Chapter 6, section 2: pages 206 – 207

11. Naming ionic compounds Pg.183 #19
 A. Cu3(PO4)2
 Look at page 178. PO4 is PHOSPHATE. It has a -3 charge.
 Cu is copper. It is on the Periodic Table!
 Since the molecule has 2 phosphates, we have a -6 charge
there.
 The copper must have a total charge of +6 to make a
neutral molecule.
 Since there are 3 of these, each one carries a +2 charge.
 Name it: copper (II) phospate

12. #19 a: Name the ionic compound Cu3(PO4)2

13. #19 a: Name the ionic compound Cu3(PO4)2

14. #19 a: Name the ionic compound Cu3(PO4)2

15. #19 b

16. #19 b: Name the ionic compound Fe(NO3)3
 This compound contains Fe, Iron. All metals are
capable of carrying different amounts of
charge, so, again, we will need to determine the
amount of charge on each of these iron atoms and
include that in the name of the molecule.
 The molecule name is partly: iron(?) --?—
 Let’s check page 178 for the name for NO3

17. #19 b: Name the ionic compound Fe(NO3)3
 19B. Fe(NO3)3
 iron (III) nitrate

18. #19 b: Name the ionic compound Fe(NO3)3
 Naming it.
 Fe is IRON
 Its charge is +3
 NO3 is NITRATE
 No need to show its charge.
 Iron (III) nitrate

19. #19 b: Name the ionic compound Fe(NO3)3

20. #19 b: Name the ionic compound Fe(NO3)3

21. #19 b: Name the ionic compound Fe(NO3)3

22. 19. c. Name the compound: Cu2O
 Cu is copper.
 There are 2 of them. How do I know?
 There is 1 oxygen atom. How do I know?
 Oxygen is born with 6 valence electrons.
 It ―wants‖ to steal 2 in order to have a full octet.
 It will steal 2 electrons and have a -2 charge.
 Two coppers and One (-2) charged Oxygen…
 Each copper must be +1.
 Copper (I) oxide

23. 19. d. Name the compound: CuO
 Cu is copper.
 There is 1 of them. How do I know?
 There is 1 oxygen atom. How do I know?
 Oxygen is born with 6 valence electrons.
 It ―wants‖ to steal 2 in order to have a full octet.
 It will steal 2 electrons and have a -2 charge.
 One copper atom and One (-2) charged Oxygen
atom…
 The copper atom must have a +2 charge.
 Copper (II) oxide

24. 20.a. Give the chemical formula for: lithium sulfate
 Lithium has the symbol Li. Found in column one, it
is ―born‖ with 1 valence electron. It will lose this one
electron to become more stable (its outer shell will be
the full shell below that one); its charge will be +1 as
a result.
 Sulfate is found on page 178. Its formula is SO4 . It
carries a -2 charge.
 In order to create a NEUTRAL molecule, we will
combine TWO lithium atoms with ONE sulfate ion.
 Li2SO4

25. 20a. Lithium sulfate
 Lithium is Li
 Sulfate is (see page 178) SO4 (-2)
 Li SO4

26. 20.b. Give the chemical formula for: strontium nitrate
 Strontium has the symbol Sr. Found in column
two, it is ―born‖ with 2 valence electrons. It will lose
those two electrons to become more stable (its outer
shell we be the full shell below those two); its charge
will be +2 as a result.
 Nitrate is found on page 178. Its formula is NO3 . It
carries a -1 charge.
 In order to create a NEUTRAL molecule, we will
combine ONE strontium atom with TWO nitrate
ions.
 Sr(NO3)2

27.  20.b. strontium nitrate
 Sr NO3

28. 20.c. Give the chemical formula for: ammonium acetate
 Ammonium is NH4; see page 178 for the formula.
 It carries a +1 charge.
 Acetate is C2H3O2; see page 178 for the formula.
 It carries a -1 charge.
 +1 (ammonium) and -1 (acetate) can bond to form
one NEUTRAL ammonium acetate molecule
 NH4C2H3O2

29. 20.d. Give the chemical formula for: titanium (III) sulfate
In our science
lab, we can
combine a LOT
of Titanium ions
and a LOT of
Sulfate ions in
one big beaker.

30. 20.d. Give the chemical formula for: titanium (III) sulfate
titanium (III) sulfate
 Titanium is Ti and carries a +3 charge.
 We know it has a +3 charge, because the (III) shows
that.

31. 20.d. Give the chemical formula for: titanium (III) sulfate
titanium (III) sulfate
 Sulfate is found on page 178. Its formula is SO4 . It
carries a -2 charge.

32. 20.d. Give the chemical formula for: titanium (III) sulfate
Ions with a 3+
charge and ions
with a 2- charge
can be combined
into NEUTRAL
groups. To make
a neutral
titanium (III)
sulfate
molecule, we will
combine TWO
Ti3+ ions and
THREE SO4 2-
ions.

33. 20.d. Give the chemical formula for: titanium (III) sulfate
 Titanium is Ti and carries a +3 charge.
 We know it has a +3 charge, because the (III) shows
that.
 Sulfate is found on page 178. Its formula is SO4 . It
carries a -2 charge.
 In order to create a NEUTRAL molecule, we will
combine TWO titanium atoms with THREE sulfate
ions.
Ti2(SO4)3

34. Page 207: #9abcd
 9a. SnI4: tin tetraiodide
 9b. N2O3: dinitrogen trioxide
 9c. PCl3: phosphorus trichloride
 9d. CSe2: carbon diselenide