Archive-Feb18-Feb22

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__Chem 122p2__-We will finish Hess' Law and do some group work.p 377 9, 10, 11 You will be given a short assignment. __Chem 122 p3__-We will finish Hess' Law and do some group work. p 377 9, 10, 11You will be given a short assignment. __Chem 111__- Today we did an example of a half-life question and then the chromatography mini lab(Evidence and Analysis). You will be given some good practise questions for half life to do over the weekend. The following questions should be attempted from the worksheet--> 1, 2, 4, 7 You also received a test topic review sheet......it is at the bottom of the half life problem sheet.
 * Feb 22-Friday**__Chem 112__-Today we will go over polyatomic naming. You will get a table that you need to study of polyatomic ions and their charges. The following questions will be assigned: p 111 32, 33. There will be a quiz on monday for polyatomic ions from the study sheet. We will hopefully have time for some chemgo.

**Feb 21-Thursday**
Chem 112-Today I will do a homework check and go over last night's questions with roman numerals. p 110 #27 and p 94 #3,4,5 was assigned. Chem 122 p2- New work: Hess' Law p 377 #7,8 were assigned and more practise with expressing enthalpy four ways was assigned. p 373 1a,d 2c, 6c Chem 122 p3- New work: Hess' Law p 377 #7,8 were assigned and more practise with expressing enthalpy four ways was assigned. p 373 1a,d 2c, 6c Chem 111-Theory questions for Ch2 will be posted on the wiki site. These need to be completed for monday. Today we spent most of the class going over radioactivity. You will need a calculator with a log key for the calucations on half life that we will do tomorrow.

**Feb 20-Wednesday**
__Chem 112-__Today will will check our questions from yesterday and our new topic will be dealing with naming binary ionic compounds with roman numerals aka multivalent ions. p 103 has a nice explanation of this. I will also hand out a sheet of polyatomic ions that will help you do # 18 on p 105. p 109-110 #26 and #28 will be assigned as homework. __Chem 122 p2__-Today we start chapter 11(an entire chapter on enthalpy :) We will go over 4 ways of expressing enthalpy. The assigned questions will be on p 373 1b, 2a,b, 3all, 6a, b. __Chem 122 p3__-Today we start chapter 11(an entire chapter on enthalpy :) We will go over 4 ways of expressing enthalpy. The assigned questions will be on p 373 1b, 2a,b, 3all, 6a, b. __Chem 111__-After I do a big homework check, we will finish the notes on separating matter. p 47 #40 will be assigned. We will spend some time overviewing the scientific problem solving model. The Evaluation and Synthesis will be assigned for the magnesium burning demonstration-this will be done neatly on loosleaf with proper headings and passed in on thursday. Lastly, we will review the crisscross approach for writing formulas for salts.

**Feb 19-Tuesday**
__Chem 112__-Today we went over the crisscross approach to writing formulas for ionic compounds. You made a large table which has to be filled in for tomorrow. We also went over binary ionic naming and writing formulas. For students absent due to the Math competition, please read over p101-102. I assigned p 107 #21 and p 105 # 19 (omit g) __Chem 122 p2__-Test today Chapter 10 __Chem 122 p3__-Test today Chapter 10 __Chem 111__-The mol contract was due today. We also went over Humphrey Davy and Volta and technological developments(p 39-40). A periodic table was passed out to everyone and we went over the first part of the periodic table assignment worksheet. This is to be completed for tomorrow. We then went over separating matter, then p 47 #39 was assigned.

**Fe**b 18-Monday

 * -**Snow day