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