Spontaneous reactions

Today we put LeChatelier's principle into practice in the lab by testing various stresses on three different systems in equilibrium.
Your lab reports are due Friday!

Today's notes on entropy and enthalpy!

University of Alaska Fairbanks info

Yesterday a rep from the University of Alaska Fairbanks came to Fraser Heights to talk to some afternoon Senior Science classes.  This is definately an option you should take a look at.  Engineering degrees have 100% job placement at the end of a 4/5 year program with the average job offer at $75000/year!

Follow this link to take a look at the programs offered and the requirements.  It is not too late to apply for this September's intake as long as you email Mary and tell her you are from Fraser Heights.  Grade 11's can also apply as early as July before they enter your grade 12 year for early acceptance.

www.uaf.edu/admissions

email Mary for more info at mmkreta@alaska.edu

Le Chatelier lab / spontaneous reactions

Wednesday we will be putting LeChatelier's Principle into action in the lab. This will be a formal lab write-up -- follow this format I put on the board -- you will need 3 data tables -  one for each system - you must read the lab handout to determine what the stresses are - I have done the first system for you as an example and given you the number of stresses each system will have. 

The LeChats lab handout  --this is in the correct order too!

These are the follow-up questions for the lab - you may answer these in point form and you do not have to have completed the lab to do the sheet-- you can get started on them today! 

Today we also did a spontaneous reaction demo  - very cool chemistry in action -- 2 solids come together to form a liquid and a gas - and it is sooo endothermic it freezes a beaker to a wood block at room temperature!!  Block 3  students -- you will see this tomorrow! 

Attached is the sheet that goes with the demo. 

http://db.tt/U4oqTATp

LeChatelier Principle

Today we discussed LeChatelier's Principle and students had class time to work on the worksheet below. The worksheet is due Tuesday !

Equilibrium graphing

Today we went over page 37 #2 -- if you struggled with this question -- watch the video  below to help you with the answers -- it gives a great visual of what the question is all about too! 

http://www.youtube.com/watch?v=tlGrBcgANSY

Then we did this equilibrium graphing assignment which compared forward and reverse reaction rates with the concentration of the reactants vs. the concentration of the products.  Complete this assignment for Friday. Answer the questions in point form but be sure to include information about BOTH graphs in your responses. For graph paper go to http://www.printfreegraphpaper.com/

The second block we did an equilibrium simulation lab with Easter Eggs.  Students played the roles of forward reaction, reverse reaction, temperature, catalysts, inhibitors etc.  They started with 2 reactants in the forward reaction (reactant #1 is 1/2 of an egg, reactant #2 was the other half of an egg) and they had to make their product ( a whole egg).  The reverse reaction was blindfolded and had to find and separate the eggs.  See the photos below and the link for the handout.  If you missed this in class - get the data collected from your lab group and complete the questions.

http://db.tt/ffaRlIzV

For Friday!!!!!!  Watch the following power point on LeChatellier's Principle.  There will be a 10 question POP QUIZ  on the powerpoint!!  The results of this quiz will tell me who is checking the blog!!

http://db.tt/QQcv09J3

Welcome to the world of Equilibrium!!!

Today we went over the labs from reaction kinetics and the reaction kinetics unit exams.

Marks will be posted for you by tomorrow!

Unit 2 is all about Equilibrium - follow the link below to the intro powerpoint and your homework assignment for today

http://db.tt/TRBSTcwu

Reaction kinetics unit exam

Monday, February 20th- students wrote the reaction kinetics unit exam.

Tomorrow we start unit 2 - Equilibrium

Reaction mechanisms and catalysts

Today was the last lesson in the reaction kinetics unit!!  Have a great weekend - study hard for Monday's exam.  Multiple choice and written response

Notes on Reaction Mechanisms.

Notes on Catalysts!!! 

We worked on this worksheet today in class

The answer key to today's worksheet is on the photo of the board below



Iodine clock lab

Watch this video of the clock reaction

http://www.youtube.com/watch?v=9EC6G_k-Sm4&feature=related

REACTION KINETICS UNIT EXAM ON MONDAY!!!

Forward and reverse reactions and lab 11b

Notes to explain activation energy for forward and reverse reactions  - Thanks to a student in one of my classes I have figured out how to get the pictures in the correct order!! 

Below is LAB 11C - this is the Iodine Clock lab that will be completed during Wednesday's class.

Energy Distribution curves and Activation Energy

Today's notes are in the photos below  -- remember they may be out of order so you will have to try and peice it together (I'm still trying to figure that out). Quiz tomorrow on everything so far in Reaction Kinetics and the Unit 1 Exam will be on Monday, February 20th. 

LAB 11C - Volume of gas produced

The photo below has the questions from the board - I don't want you to print this sheet out -- it is only so you have the questions - you still have to answer the questions in your formal lab write-up. 

Your labs are due on Monday, Feb. 13th.

collision theory and enthalpy

Today's powerpoint on collision theory:

http://dl.dropbox.com/u/52353530/CHEM%2012/Chemistry%2012/Reaction%20Kinetics/COLLISION%20THEORY.ppt


Enthalpy handout :

http://dl.dropbox.com/u/52353530/CHEM%2012/Chemistry%2012/Reaction%20Kinetics/enthalpy%20exo%20endo%20notes.docx

Today's homework assignments are on the powerpoint slides and the bottom of the enthalpy handout.

Also:  Lab 11C pre -lab work must be completed for tomorrow.  photos of the lab handout are below  

Reaction Kinetics INTRODUCTION

Students and Parents: Welcome to my Blog!! I hope to keep this up-to-date with class materials and information that is important to the class. 

The Blog for the Sememster 1 - 2012/13 school year will begin here with unit 1 - Reaction Kinetics. If you need help with the Chem11 Review or Lab Safety you may check back  to the February 2012 blog posts and all the information is there.


To access the introduction to Reaction Kinetics Powerpoint - follow the link below:
http://dl.dropbox.com/u/52353530/CHEM%2012/Chemistry%2012/Reaction%20Kinetics/INTRO%20REACTION%20KINETICS.ppt

Your homework assignments are on the powerpoint slides.

I am looking forward to a great semester with all of you.

Lab write-ups, graphs and data tables

The following handouts will help you with writing lab reports. I have also included instructions for calculating slope. Refer to this often throughout the course!