1/9/2012 Standards : 3 (Conservation of Matter & Stoichiometry) O bjectives :

1/9/2012 Standards: 3 (Conservation of Matter & Stoichiometry)Objectives:a. Be able to balance and classify chemical reactionsDO 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://mrwiggersci.com/chem/Std_Forms/Report-of-Grade-Posted-Wrong.htm

Get these from your Grade Report available on my website

This is where I report to you what I did about your issue.

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.

A Beginners Guide to Balancing Equations (YouTube)

Show only the first equation balancing in class.

Below are abbreviations for the classifying of chemical reactions. We will use these with the Worksheet – Balancing Equations. 

a. SYN - Synthesis – p. 284 b. COM - Combustion – p. 285 c. DEC - Decomposition – p. 286

d. SR - Single Replacement – p. 287       e. DR - Double Replacement - p. 290      f. Ox-Red - Oxidation/Reduction (aka redox) – p. 636 g. 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+ ionsBases 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+ ionsBases have OH- ions

Acid Examples HCl H2SO4 H3PO4 Base Examples: NaOH Ca(OH)2 Al(OH)3

DECOx-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 - Solubility of Some Ionic Compoundsc. Review and practice balancing and classification of reactionsDO 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 32. Watch the video I showed you in class today. (5 pts) Std 3

all 5 equations, balanced and classified. Basket First

B

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 equationsDO 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 FIRST1. 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 pointsDO 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 3Solids will be identified with (s) , liquids (l) , gases (g) Solids, liquids and gases - none of these are written as ions

in ionic equations.========================================================

Lab due end of period. Data sheet complete and questions answered.

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 - PO4

3-

(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 containing Ag1+ 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)

Notice: equaton was balanced for you already

2 HClO(aq) + Ca(0H)2 (aq) -----> 2 HOH (l) + Ca(ClO)(2) (aq)

IONIC EQUATION

NET IONIC EQUATION

2 H1+ 2 ClO1- Ca2+ 2 0H1-

2 HOH (l) CaClO

Spotlight.exe

H2O

2 H1+ + 2 ClO1- + Ca2+ + 2 0H1-

-----> 2 HOH (l) + Ca2+ + 2 ClO1-

H1+ + 0H1-

-----> HOH (l)

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

Spotlight.exe

IONIC EQUATION

NET IONIC EQUATION

2 H1+ S2- Fe3+ 3 Br1-

-----> 2 FeS3 (s) + HBr

3 H2S(aq) + 2 FeBr3 () -----> Fe2S3 (s) + 6 HBr (aq) must be balanced

6 H1+ + 3 S2- + 2 Fe3- + 6 Br1-

-----> Fe2S3 (s) + 6 H1- + 6 Br1-

3+ 1- 3+ 2-

3 S2- + 2 Fe3- -----> Fe2S3 (s)

p. 306, 92 (a)

Notice: equation was balanced for you in text

H3PO4 (aq) + 3 RbOH (aq) -----> 3 H2O (l) + Rb3PO4 (aq)

Spotlight.exe

IONIC EQUATION

NET IONIC EQUATION

3 H1+ PO4

3- + 3 Rb1+ 3 OH1- -----> 3 H2O (l) + 3 Rb1+ 1 PO4

3-

3 H1+ + PO4

3- + 3 Rb1+ + 3 OH1- -----> 3 H2O (l) + 3 Rb1+ + PO4

3-

H1- + OH1- -----> H2O (l)