Chem 30 Days – Fall 2011

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Chemistry 30 Days in Class

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Unit 1: Solubility & Solutions

> October 14 – Friday, Day 6

  • Review: 1 example of each – Hess’s Law, Heats of Formation, and Bond Energy
  • Notes: Reaction spontaneity
  • Handout: did spontaneity question (#1)
  • Handed out review questions (set #1-3) did set#3 question 4

> October 13 – Thursday, Day 5

  • No class due to Early-Dismissal

> October 12 – Wednesday, Day 4

  • Chem presentations
  • Reviewed homework except redo number 40 for homework
  • Homework:
  1. Finish question #40

> October 11 – Tuesday, Day 3

  • Did text questions 31 b, c, and e from Pg. 512
  • Went to questions package (calculating change in enthalpy questions — the handout of questions where we only did the last 3 Hess’s Law questions on the backside…):
  • Added combustion general formula to question 12, did 12, then did 14a, 15a, and 16a
  • Class time to finish questions on side 1 (10, 11, 14b, 15b, 16b, 17) AND 32 (the equation you’re trying to create using Hess’s Law is this one: N2 + O2 –> 2NO), and 33
  • Notes: Bond energy
  • Did question 21 (bond energy question) together from questions package
  • Homework:
  1. These questions from questions package: 34, 36, 39 and 40.
  2. Chem presentations for tomorrow!

> October 7 – Friday, Day 2

  • 15 minutes so I could help on lab questions
  • Handed out questions package
  • Did Hess’s Law questions 9-11 from backside of questions package
  • Notes: Standard Heats of Formation
  • Questions 30a and 31a from Pg. 512
  • Homework:
  1. Work on presentations for Wednesday!

> October 6 – Thursday, Day 1

  • Did Thermodynamics labs
  • Labs will be de Monday

> October 5 – Wednesday, Day 6

  • Did questions 9-11
  • Notes & Diagrams based on sign of enthalpy
  • Notes: Calculating Enthalpy Change
  • Hess Law notes and sample question then text examples (Pg. 508 #28 & 29)
  • Handed out Thermodynamics labs
  • Homework:
  1. Complete prelabs

> October 4 – Tuesday, Day 5

  • Definitions
  • Questions 1-8
  • Calorie questions 1-3 (Text pags 492, showed number 2)
  • Reviewed answers
  • Read Sections (interchangining notes) in text Pgs. 498 – Chemical Energy and the Universe, Enthalpy and enthalpy changes
  • Did World of Water explosion with ethanol!

> October 3 – Monday, Day 4

  • Read most of section Pgs. 488-491
  • After Law of Conservation of Energy reading: Did roller coaster diagram with poor Jiggs and the butterfly effect, butterfly pushes our coaster down (conversion of potential energy into other forms)
  • Grade 12 pictures for picture day (20 mins?)
  • Reviewed diagram
  • Handed out calorie sheet and question packet
  • No homework

> September 30 – Friday, Day 3

  • Reviewed exams
  • Did H2 in balloon (we got a big balloon!!) and blew it up in Mr. U’s room
  • Rest of time to work on presentations

> September 29 – Thursday, Day 2

  • Time to work on Chem Presentations

> September 27 – Wednesday, Day 1

  • Unit Exam #2 = Solubility & Solutions

> September 27 – Tuesday, Day 6

  • Reviewed labs & did examples of selective precipitation (using lab results!)
  • Handed out review for tomorrow’s exam
  • Rest of time to work on review

> September 26 – Monday, Day 5

  • Reviewed prelabs
  • Conducted lab
  • Homework:
  1. Complete questions 1 & 3 from the lab

> September 23 – Friday, Day 4

  • Reviewed solubility questions
  • Handed out chem presentation stuff
  • ppm & ppb more calculation examples
  • ion concentration examples, as well as mixed ion solutions
  • Review & Practice handout which we worked on
  • Handed Qualititative Analysis lab procedures and pre-labs
  • Homework:
  1. Finish pre-lab questions 1-5

> September 22 – Thursday, Day 3

  • Reviewed Temp graph
  • Reviewed yesterda’s questions
  • Ppm questions
  • Serial Dilutions
  • Solubility questions (almost finished but didn’t assign)

> September 21 – Wednesday, Day 2

  • Reviewed ppm homework
  • Did backside (temperature & solubility) & reviewed
  • Handed out ppm questions & Standard dilutions stuff
  • Notes: Concentration of Ions in Solutions
  • Questions handout & we worked on it until the end of class (the one for the online Chem 30 site): LINK
  • Homework:
    1. Cmplete handout

> September 20 – Tuesday, Day 1

  • Bring out HCl stock solution (12M) and used a practical question about preparing a certain amount of chemical and then wrote out a sentence about its preparation (all to be written down in notes)
  • Include in notes: “Do as you oughta, add acid to water”, giving reasons why this rule should be applied
  • Did all M1V1 = M2V2 calculations on Worksheet #1 with sentences (note how acid is added to water for a few of them whereas all others should be water being added to the chemical so that you don’t lose chemical by the transfer) — this took the majority of class and students did backside questions once they finished 1a-d and 2a-d on the frontside (I provided answers for questions 1-3)
  • Did ppm dilution experiment
  • Homework:
    1. Do frontside questions to ppm assignment

> September 19 – Monday, Day 6

  • Students tried to make a supersaturated solution of NaCl (note factors like boiling water is easy to see but you’ll lose water as steam once it starts boiling so take it off right away and undershoot with the amount of NaCl you add as suggested by the table 15-2 on pg 457)
  • Didn’t work :(, but try again for next year!
  • Notes: Solution Concentration, Expressing concentration, Percent by mass, Percent by volume
  • Iterspersed notes with questions 8-13 (Pgs. 465-466) — note: we already did the molarity questions so no need for notes or examples…
  • Notes: preparing Molar Solutions then did #17 and 18
  • Notes: Diluting solutions
  • Handed out worksheet #1 but no time to do questions

> September 16 – Friday, Day 5

  • Made a supersaturated solution together — sodium acetate (instructions in teacher text Pg. 459 – Note that we used a hot plate instead of a bunsen burner to heat it, I also used ice to cool it…), as it cooled we did:
  • Text questions Pg. 461 # 1 & 2 (did #1 together) & Review
  • Independent work on #3, 4, 5, and 7 (do a graph for 7) & Review
  • Independent work on Pg. 465 #14 and #16 & Review
  • Put a seed crystal into the sodium acetate solution, it worked great!
  • Handed back labs & reviewed
  • Handed back review tests & reviewed (they handed these back)
  • <there was about 10-15 minutes left to do more but I didn’t have anything prepped for more… so a note for next year>

> September 15 – Thursday, Day 4

  • Handed in labs and procedures
  • Notes from aqueous solutions of ionic compounds until Henry’s Law !!
  • would have assigned questions (1-5, and 7) but we have limited textbooks… we’re getting more soon (but actually no, doing an example question for Henry’s Law is important, ie. #1…

> September 14 – Wednesday, Day 3

  • Homework check and reviewed pre-labs for Polar and Non-polar Solutes and Solvents lab
  • Rest of time to do labs
  • Homework:
  1. Finish lab questions for tomorrow

> September 13 – Tuesday, Day 2

  • Did demo experiment from Pg. 453 together informally (ammonium chloride and calcium chloride)
  • Read through textbook alternating with notes (Finished up until “Like dissolves like” portion of Solvation in Aqueous Solutions section, which is important for tomorrow’s lab)
  • Handed out Polar and Non-polar Solutes and Solvents lab
  • Homework:
  1. Finish pre-labs

> September 12 – Monday, Day 1 – Wendy Lutz Subbing (mr. g marathon day!)

  • Students watched the video entitled Combustion & Replacement Reactions with emphasis on solubility stuff (~30 minutes)
  • Following video, students read science magazines

> September 9 – Friday, Day 6

  • Review Test

> September 8 – Thursday, Day 5 — NO CLASS

  • Early Dismissal

> September 7 – Wednesday, Day 4

  • Homework check questions 1-7 and did question 8 together as a class (showing Actual Mole Ratio vs Equation Mole Ratio)
  • Showed another example of a generalized table
  • Textbook questions: Pg. 368 # 20 & 21 (help students independently with 20d and 21b with calculating amount of excess reactant)
  • Textbook questions: Pg. 294 # 33 and 35 (for more review on chemical, complete and net ionic equations)
  • Review test on Friday: it will be formatted like the first review handout (the one with 25 questions) — but can also include questions like Pg. 368 # 20 & 21, involving limiting and excess reactants

> September 6 – Tuesday, Day 3

  • Reviewed question #24
  • In-class questions from Text (in partners independently): Pg. 359-362 #9-14 (putting answers on board — Smartboard next time)
  • Review any textbook questions if necessary
  • Handed out other review sheet for doing after
  • Worked on homework until end of class (they all basically finished the homework in class)
  • Homework:
  1. Questions #1-7 on other review sheet

> September 2 – Friday, Day 2

  • Reviewed questions done yesterday
  • Continued working on review (got to question 23)
  • Homework:
  1. Finish question #24

> September 1 – Thursday, Day 1

  • Handed out textbook to each pair (because of limited texts) & textbook forms, class outline, expectations etc.
  • Cleaned lab equipment for most of class
  • Picked up periodic table and reviews and began working on review (they got to question #7)

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