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12/10/2012 Standards : 3 (Stoichiometry & Conservation of Mass) O bjectives :

12/10/2012 Standards : 3 (Stoichiometry & Conservation of Mass) O bjectives : a. Be able to balance simple chemical equations b. Be able to recognize: skeleton eqn, coefficients, reactants, & products D O NOW :

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12/10/2012 Standards : 3 (Stoichiometry & Conservation of Mass) O bjectives :

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  1. 12/10/2012 Standards:3 (Stoichiometry & Conservation of Mass) Objectives: a. Be able to balance simple chemical equations b. Be able to recognize: skeleton eqn, coefficients, reactants, & products DO NOW: 1. Copy everything you see on the next slide, then we will learn about skeleton equations. HOMEWORK: 1. SN Ch 10.1 p. 125-128 (4 pts) Std 3 2. Ch 10.1 PP's, p. 279 1-3 (write word, skeleton & balanced equations) (1 pt) Std 3 ========================================================= STAMPS/BASKET: NONE Announcement Buybacks at lunch this Wed. for Test 2. You will be able to use all resources you would like to properly explain any q's you missed. Each quest. you reanswer with a correct explanation will be worth 1/2 a quest.

  2. Name:_________________ Date: 12/10/12 Per:_____ DO NOW: 1. Balance these equations: a. ___ HgO ---> ___Hg + ___O2 b. ___ Zn + ___ HCl --> ___ ZnCl2 + ___ H2 products reactants 5 min to balance above equations - work in groups of 4 p. 279 Continue to take notes on everything requested by the video and turn in at end of period (5 pts)

  3. NOH on 17 copy this on bottom of paper

  4. Std 3 If you didn't get this page in class today, here is a link to get it. http://mrwiggersci.com/chem/Tutorials/counting_atoms_in_molecules.PDF

  5. Spotlight.exe DO NOW: 1. Balance these equations: a. ___ HgO ---> ___Hg + ___O2 b. ___ Zn + ___ HCl --> ___ ZnCl2 ___ H2 1 2 Coefficient - the number in front of each element/compound in an equation

  6. 12/11/2012 Standards: 3 (Stoichiometry & Conservation of Matter) Objectives: a. Practice techniques in Balancing Equations DO NOW: 1. Balance these 3 equations: a. __C2H5OH (l) + __O2 (g)à __CO2 (g) + __H2O (g) b. __NH3(g) + __O2 (g)à __NO (g) + __H2O (g) c. __SiO2 (S) + __HF (aq)à __SiF4 (g) + __H2O (l) HOMEWORK: 1. Handout - Worksheet - Balancing Equations 1-14 (5 pts) Std 3 ================================================================================ BASKET:Journal 12/10 (balancing equations) 1. SN Ch 10.1 p. 125-128 (4 pts) Std 3 2. Ch 10.1 PP's, p. 279 1-3 (write word, skeleton & balanced equations) (1 pt) Std 3 ANNOUNCEMENTS: Final notebook Check - P 1 & 2 - Wed . P 3 & 5 - Thurs.` P 6 Friday Mr. Wigger sings Friday at end of period.

  7. a. __C2H5OH (l) + __O2 (g)à __CO2 (g) + __H2O (g) b. __NH3(g) + __O2 (g)à __NO (g) + __H2O (g) c. __SiO2 (S) + __HF (aq)à __SiF4 (g) + __H2O (l)

  8. Spotlight.exe LEFT RIGHT Reactants Products Cu(s) + AgNO3 (aq) -----> Ag(s) + Cu(NO3)2(aq) The LAW of CONSERVATION OF MASS requires that we balance chemical equations

  9. Link for video showing reaction of copper wire (Cu) with silver nitrate solution ( AgNO3 ) http://www.mrwiggersci.com/chem/Smart-Board-Activities/Ch10-Chemical-Reactions/Cu-plus-AgNO3-vid.mpg Spotlight.exe link If watching at home, click here to see video Cu(s) + AgNO3 (aq) -----> Ag(s) + Cu(NO3)2(aq) 2 1

  10. __H2 +__O2 --->__H2O 2 1 Work through this sample together, or click on the video file below to watch, listen, and learn how to balance a chemical equation. Video Tutorial Answer 2H2+ O2 2H2O balancing chemical equations.avi

  11. Balance the following equation. __C+ __Cl2 ---> __CCl4 2 1 Answer C+ 2Cl2 CCl4

  12. __CaCO3 --->__CaO + __CO2 2 1 Answer CaCO3 CaO + CO2

  13. DIRECTIONS: Copy these equations on the paper you will be turning in. Balance each equation on your own. 1. __H2 + __Cl2---> __HCl __Na+ __F2 ---> __NaF 2. __H2O2 ---> __H2O + __O2 3. __KClO3 --->__KCl+ __O2 4. __P+ __O2---> __P4O10 5.

  14. Homework 4. __Ca(OH)2 + __H3PO4 ---> __Ca3(PO4) + __H2O H2O aka HOH

  15. 12/12/2012 Standards: 3 (Stoichiometry & Conservation of Matter) Objectives: a. Practice techniques in Balancing Equations b. Be able to recognize the 7 different classifications for reactions. DO NOW: 1. Watch and take notes on 10 min video of writing balanced chemical equations given 2 reactants. HOMEWORK: 1. Yesterday's Handout - Worksheet - Balancing Equations 14-24, and classify all 24 equations in as many categories as each belongs in. (5 pts) Std 3 ================================================================================ BASKET:Journal 12/11 (balancing equations) 1. Handout - Worksheet - Balancing Equations 1-13 (5 pts) Std 3 ANNOUNCEMENTS: Final notebook Check - P 3,5 & 6 - Thurs. (tomorrow) Mr. Wigger sings Friday (tomorrow) at end of period.

  16. 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+ ions Bases have OH- ions Acid Examples HCl H2SO4 H3PO4 Base Examples: NaOH Ca(OH)2 Al(OH)3

  17. O2 must be on the reactant side

  18. always hot reaction

  19. DEC Ox-Red

  20. BUYBACKS - TEST 2 What you do FIRST: 1. get your scantron, counter on right side of room as you face the rear 2. get your test according to the test # you recorded on you scantron You can get half credit for all questions you missed that you: a. Put your name, period, date in top right corner of paper before you do anything else. If this is missing, no credit b. Copy missed question on your paper c. Copy the correct answer as shown on your scantron (complete answer, not just letter). d.MOST IMPORTANT - GIVE A COMPLETE EXPLANATION AS TO WHY THE ANSWER IS CORRECT, OR A REASON WHY THE SCANTRON GRADED IT WRONG. You may use textbook, notes, anything that will help you understand how to answer.

  21. WHEN YOU ARE DONE Staple your scantron to your paper and place in basket. Return your test to the stack of tests IN NUMERICAL ORDER WITH SMALLEST NUMBER ON TOP.

  22. 12/13/2012 Standards: 3 (Stoichiometry & Conservation of Matter) Objectives: a. Practice techniques in Balancing Equations b. Be able to recognize the 7 different classifications for reactions. DO NOW: 1. Watch and take notes on 10 min video completing and balancing chemical equations, given 2 reactants. HOMEWORK: 1. The first row of the data sheet, Pb(NO3)2 combines with each of the other 11 chemicals used in this lab. Complete the equations for each reaction and classify it in as many ways as possible. Do not print unless you didn't get handout in class yesterday or today. ================================================================================ BASKET:Journal 12/12 (balancing equations) 1. Handout - Worksheet - Balancing Equations 14-24, and classify all 24 equations in as many categories as each belongs in. (5 pts) Std 3

  23. ANNOUNCEMENTS: a. Final notebook Check - P 3,5 & 6 - Today b. Buybacks again today for anyone who couldn't do yesterday. c. Mr. Wigger sings Monday (12/17) at end of period.

  24. 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

  25. Get these from your Grade Report available on my website This is where I report to you what I did about your issue. http://mrwiggersci.com/chem/Std_Forms/Report-of-Grade-Posted-Wrong.htm

  26. 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.

  27. O2 must be a reactant DEC Ox-Red

  28. DO NOT FILL IN THESE BOXES NOW!!!! This is your data sheet for the lab.

  29. HW for 12/13 - Solubility of Some Ionic Cmpds Name:____________ Date:____ Per:____ REACTANTS ----> PRODUCTS 1x___ 1. 2. 3. 4.

  30. Video on creating and balancing chemical equations given 2 reactants. Most of those you will be doing are double replacement, which is the easiest to do. Completing and balancing Chemical Equations - Part 1 http://www.youtube.com/watch?v=8ysxuVbpV-o

  31. 12/13/2012 Standards: z Objectives: a. DO NOW: 1. 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 BASKET:

  32. /2010 Standards: z Objectives: a. DO NOW: 1. HOMEWORK: 1. ==================================================================== STAMPS: Journal BASKET:

  33. /2010 Standards: z Objectives: a. DO NOW: 1. HOMEWORK: 1. ==================================================================== STAMPS: Journal BASKET:

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