Oct+25+to+29

Here is what we did this week

===Oct 25-Monday Day 31 MISS A TEST ? PLEASE BRING LUNCH ON WEDNESDAY OF THIS WEEK so you can do your test at noon.=== Chem 121- Lab Day 2 Please have prelab questions ready in order to go into the lab. Chem 112- Today we will spend some more time working with mol calculations. mass to particles and particles to mass You will do #1 from themole worksheet (top right). Chemgo finally today. Could you copy the 12 reactions from the WIKI into your notebook for tomorrow. Here they are as a pdf file and a word file: [|Balancing EquationsSheet18.PDF] [|Balancing Practise.doc] Chem 122-We will go over conjugate acid/base and finish the practise pH calculation questions. If you bring in your samples we will check pH with the pH meter. I will take in the homework from the weekend(**It was assigned last thursday**)

Chem 112-Today you will learn how to balance equations. Please attempt all questions from 1 to 6 and the bottom right corner of handout from last week(with mole picture on it). The answers for the mole worksheet will be also checked(only had enough time in period 5). Here is a good site to practise balancing: [] The following link at the left will be good for practising other topics from our course Useful Chemistry Sites Chem 121-Day 3 of labs Chem 122-We will go over calcuations involving strong acids and bases.Please do #4, 10 and 15 from the long worksheet. Today we will review work with Arrehenius and his ideas on acids and bases as involving a reaction with water to produce conjugate acids and bases.. Please remember to bring a sample for testing pH.
 * Tuesday October 25 Day 32**

Wednesday Oct 26 Day 33
Chem 112-Today you will learn about percent composition and go over Formation(combination)/Decompostion Reactions. Homework:p 306 #32,33, p 307 # 34,35 and p 331 #13,14 and p 332 #15,16 Chem 121-Day 4 of labs Chem 122-- I will also go over indicators today. You will do some practise questions from the board with the indicator table. I will give you more time to work with strong acids and bases from the long sheet. I assigned 6,8, 9, 11, 12, 13,14

**Thursday Oct 27** Day 34 No Homework DANCE tonight
Chem 112-We will go over single replacement reactions today. We will start a pair assignment on the mole/naming/writing the formula and balancing. YOU HAVE A MIDTERM ON Tuesday NOVEMBER 9. [|Chem 112 Midterm Format 2010.doc] [|Chem 112 Midterm Format 2010.pdf] Chem 122-Today we will go over the answers to the worksheet. **Sheet 3 will be assigned for monday**. I will also finish going over indicators(we willl finish tomorrow as several people remembered to bring in samples) Chem 121-Now that labs are completed we will work with completing Ch 17. We will go over calorimeter calculations today after I go over some theory on this. You were given time in class to do #4 from the hadout.

Chem 121 students... Ignore the info below as I am using it to keep track of where we are after labs. Chem 121-Previous work before labs was.... Chem 121-I have an appointment that I must attend this afternoon so Miss Fawcett will be with you today. You will be doing an in class assignment to pass in that involves section 17.3 in your textbook. You will also do a detailed heating curve question to pass in. Since I will not be able to do a pre-lab with you, the labs will begin on thursday. Homework: Worksheet #2, #3 and using p 511 and 512 compare in a list the difference between a constant volume and constant pressure calorimeter. Today we will overview some of the topics we did before labs started. These topics include finding enthalpy from a reaction equation and exo and endo thermic reactions. We will do some work with calorimeter calculations today. You will get some notes on this. You will also do #4 and #5 from the handout. Please read over the small scale lab p 533 that you will do tomorrow. . In addition to what the lab outline asks, you will be required to find the number of molecules of candle wax burned in the given time. You will also be required to figure out how long you will have to burn the candle to use up a mole of wax ===Friday Oct 29 - I will be sending out marks for Chem 112 and 122 today, however I cannot send the Chem 121 marks yet as the labs are not complete. I hope to do this on monday evening.===
 * Friday Oct 28**Chem 121-Labs will start tomorrow. We will do our prelab today.Reminder: No open toed shoes or contact lenses. New work for today will involve enthalpy of reactions. We will learn the difference between exo and endothermic reactions. Assigned questions from handout #6 and #7 and textbook p 516 14, 15 as well as p 517 18, 19

Day 35 Chem 112. I will do two demos, one with a single replacement reaction and of a double replacement reaction. The following textbook questions are assigned for the weekend p 334 #17, p 335 # 18, p 339 #24b,d and #26 a,c You will complete your pair assignment today(you will get ten-15 minutes to complete this on monday). Chem 122-You will do some practise questions from the board with the indicator table. You will do some practise questions with indicators #1,2,3 from the smart board. I will have you work with a partner on some practise questions with Bronsted Lowry and indicators. Be sure to complete the table from the top right side of the handout with practise sheets 1 to 4 on it. This means sheet 3 should be completed in your notebook for tomorrow. Be careful with bases that have more than one hydroxide.

Chem 121- We will go over the Bomb calorimeter and do #5 from the worksheet. I hope to have you do some pair work from the blue booklets....77 Partner 1--> 2a)3a)4a)6, 8 Partner2--> 1,2b,3b,4b, 7,8.