1/9/2012 Standards: 3 (Conservation of Matter & Stoichiometry)
Objectives:
a. Be able to balance and classify chemical reactions
DO NOW:
1. Get out sheet we used last wk before vacation, called Balancing
Equations (Std 3) AND Copy classifying codes for chem. eqns.
HOMEWORK:
1. Print Chemistry 1: Ch 1-11 Review for Final for S1 – Taylorson (1 pt)
Std MISC
2. Print LAB – Solubility of Some Ionic Compounds (1 pt) Std 3
3. Write balance equations and classify reactions Ch 10.1 p. 285-286 14-20. INSTEAD OF
FOLLOWING THE DIRECTIONS IN THE TEXTBOOK!!!
4. Watch the video I showed you in class today. (5 pts) Std 3
a. Write down all 5 equations that are balanced in the vid, and balance
each.
b. For each equation classify in as many ways as you can using the
codes we learned in class today.
=========================================================
STAMPS:
None
Announcement - Very Important
In order to correct grades posted wrong or not posted at all, you will need to
print a form and complete it. If you have your original assignment, it must be
attached to the form as proof of the error.
Available on my website at:
Standard Stuff > Class Forms and Charts
You will find it in Section F
Report
of Grade Posted Wrong
http://mrwi
ci.com/che
_Forms/Re
of-GradePostedWrong.htm
Get these from your
Grade Report
available on my
website
This is where I report to
you what I did about
your issue.
Show only the first equation balancing in class.
A Beginners Guide to Balancing Equations (YouTube)
You need to watch this entire video at home tonight as homework, be sure
to copy all 5 equations, balance each, and classify each using the codes we
will learn in class today.
Below are abbreviations for the classifying of chemical reactions. We will use these
with the Worksheet – Balancing Equations.
d.
e.
f.
g.
a. SYN - Synthesis – p. 284
b. COM - Combustion – p. 285
c. DEC - Decomposition – p. 286
SR - Single Replacement – p. 287
DR - Double Replacement - p. 290
Ox-Red - Oxidation/Reduction (aka redox) – p. 636
AB – Acid/Base - p. 295
A + B ---> C
A + O2 ---> C
A ---> B + C
AB + C ---> CB + A
AB + CD ---> AD + CB
Charge on ions chg
Acid + Base ---> H2O + salt
Salt = metal + non-metal
Acids have H+ ions
Bases have OH- ions
Acid Examples HCl
H2SO4 H3PO4
Base Examples: NaOH Ca(OH)2 Al(OH)3
Below are abbreviations for the classifying of chemical reactions. We will use
these with the Worksheet – Balancing Equations.
Salt = metal + non-metal
Acids have H+ ions
Bases have OH- ions
Acid Examples HCl
H2SO4 H3PO4
Base Examples: NaOH Ca(OH)2 Al(OH)3
DEC
Ox-Red
1/10/2012 Standards: 3
Objectives:
a. Students will start their final review now, not the night before the exam.
b. Prepare for Friday's’s lab
B - Solubility of Some Ionic Compounds
c. Review and practice balancing and classification of reactions
DO NOW:
1. Define solubility
2. Classify & balance all homework problems. (see #3 and #4 in "Stamps")
HOMEWORK:
1. Complete, balance and classify all reactions on the first row of the lab data
sheet ( Pb(NO3)2 with each of the other 11 chemicals on this row).
(5 pts) Std 3
===========================================================
STAMPS: Journal 1/9
1. Write balance equations and classify reactions Ch 10.1 p. 285-286 14-20
(3 pts) Std 3
2. Watch the video I showed you in class today. (5 pts) Std 3
Basket First
all 5 equations, balanced and classified.
DO NOT FILL IN THESE BOXES NOW!!!! This is your
data sheet for the lab.
1/11/2012 Standards: 3
Objectives:
• Be able to write word, skeleton, and balanced equations
DO NOW:
1. Textbook - p. 304 71 (3 words equations, skeleton equations for each,
balance skeletons, and classify each.
HOMEWORK:
1. Ch 10 Assess - p. 305 72,73, 77, 78. You are copying 8 word equations,
creating 8 skeletons, balancing the skeletons, and classifying each equation.
(5 pts) Std 3
=======================================================
STAMPS: Journal 1/9 & 1/10
BASKET FIRST
1. Equations complete and balanced, and classified,
from row 1 of lab data sheet (5 pts) Std 3
from yesterday
3. Write balance equations and classify reactions Ch 10.1 p. 285-286 14-20
(3 pts) Std 3
4. Watch the video I showed you in class today. (5 pts) Std 3
all 5 equations, balanced and classified.
Complete and Balance
1
Answer?
2
Answer?
3
Answer?
1/12/2012 Standards: 3
Objectives:
a. Be able to write ionic and net ionic equations
b. Be able to use Solubility Chart (Today's Handout)
DO NOW:
1. Define and give one example of each:
Ionic equation, net ionic equation
(see pages 293-294)
HOMEWORK:
1. PRINT & FOLLOW DIRECTION - Solubility of Some Ionic Cmpds Follow-up Sheet - Do everything but the "Expt Result" column. (5 pts) Std 3
========================================================
STAMPS: Journal 1/10 & 1/11
1. Ch 10 Assess - p. 305 72,73, 76, 77. You are copying 8 word equations,
creating 7 skeletons, balancing the skeletons, and classifying each equation.
(5 pts) Std 3
2. Any HW that whole class is not stamped.
4
Answer?
Balanced Chemical Equation
Complete Ionic Equation (separate ions)
Net Ionic Equation (only ions that react - form compounds)
Balanced Chemical Equation
Complete Ionic Equation (separate ions)
Net Ionic Equation (only ions that react - form compounds)
GUIDED PRACTICE
1/13/2012 Standards: 3
Objectives:
a. Be able to complete lab Solubility of Some Ionic Compounds due end of period - 15 points
DO NOW:
1. Read lab instructions silently to yourself.
HOMEWORK:
1. Ch 10 Assess p. 305 – 306 90-92 Write ionic, net ionic and classify all
equations (5 pts) Std 3
Solids will be identified with (s) , liquids (l) , gases (g)
Solids, liquids and gases - none of these are written as ions
in ionic equations.
========================================================
ab due end of period. Data sheet complete and questions
answered.
L
Homework will be stamped on Tuesday
In chemical equations you may see these subscripts:
(l) = pure liquid
(g) = gas
consider as product if on
(s) = solid
the right
(aq) = dissolved in water (written as ions)
If you have any of these on the right side of the equation, that means a
reaction will occur!
(l) , (g) , (s)
Example:
H2SO4 (aq) + CaCO3 (s) ----> H2O(l) + CO2 (g) + CaSO4 (s)
Complete ionic and net ionic equations are the same for this
equation.
This video will define 4 important terms. Then,
3 actual homework problems will be solved and
explained.
p. 305-306 90-92 (all)
The following subscripts are used in this HW, you will see them used in the future.
aqueous - PO43- (aq) perhaps from the acid H3PO4 (aq)
ions dissolved in water
solid - Ag2S (s) will not dissolve in water. When an (aq) solution of a
compound
1+
containing Ag ions is mixed with an (aq) solution of a
compound containing Cl1- ions, Ag1+ ions "stick" to Cl1- ions to form
Ag2S (s) solid which will not dissolve in water.
gas - HCl (g) This is hydrogen chloride (the gas). When bubbled into
water, it will form hydrochloric acid which forms H+(aq) ions and
Cl1-(aq) ions in the water
liquid - H2O (l) Liquid isn't just the state of the substance in this case.
Liquid means "pure" water. It is formed as a product in a reaction.
p. 305, 90 (c)
S
o
ig
h
e
e
H2O
Notice: equaton was balanced for you already
2 HClO(aq) + Ca(0H)2 (aq) -----> 2 HOH (l) + Ca(ClO)(2) (aq)
IONIC EQUATION
2 H1+ + 2 ClO1- + Ca2+ + 2 0H1- -----> 2 HOH (l) + Ca2+ + 2 ClO1NET IONIC EQUATION
H1+ + 0H1- -----> HOH (l)
2 H1+ 2 ClO1-
Ca2+ 2 0H1-
2 HOH (l)
CaClO
This video will define 4 important terms. Then,
3 actual homework problems will be solved and
explained.
CONTINUED - Part 2
p. 305, 91
Notice: this equation is not balanced, but I have balanced
the molecules and predicted the formation of HBr
3+
1-
3 H2S(aq) + 2 FeBr3 () ----->
3+
Fe2S3 (s) + 6 HBr (aq)
IONIC EQUATION
1+
26
2-
H + 3 S + 2 Fe3- + 6 Br1- ----->
Fe2S3 (s) + 6 H1- + 6 Br1-
NET IONIC EQUATION
3 S2- + 2 Fe3- ----->
2 H1+ S2-
Fe2S3 (s)
Fe3+ 3 Br1- ----->
must be balanced
2 FeS3 (s) + HBr
S
o
g
t.
xe
p. 306, 92 (a)
Notice: equation was balanced for you in text
H3PO4 (aq) + 3 RbOH (aq) -----> 3 H2O (l) + Rb3PO4 (aq)
IONIC EQUATION
3 H1+ + PO43- + 3 Rb1+ + 3 OH1- -----> 3 H2O (l) + 3 Rb1+ + PO43NET IONIC EQUATION
H1- + OH1- -----> H2O (l)
3 H1+ PO43- + 3 Rb1+ 3 OH1- -----> 3 H2O (l) + 3 Rb1+ 1 PO43-
S
o
ig
h
e
e