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Unit 3:  Energy Changes & Rates of Reaction

Overall Expectations
By the end of this unit, students will: 

-analyse technologies and chemical processes that are based on energy changes, and evaluate them in terms of their efficiency and their effects on the environment;
-investigate and analyse energy changes and rates of reaction in physical and chemical processes, and solve related problems;
-demonstrate an understanding of energy changes and rates of reaction.


Useful Websites
I will neaten this up soon....

Virtual Calorimetry                  http://www.chm.davidson.edu/vce/
Hess Law Tutorial                     http://www.ausetute.com.au/hesslaw.html
Bomb Calorimetry                    http://www.youtube.com/watch?v=ohyA9amFfsc
Molar Enthalpy Table                http://library.thinkquest.org/C004970/thermo/index.htm
Kinetic Molecular Theory           http://www.chm.davidson.edu/vce/kineticmoleculartheory/basicconcepts.html
Collision Theory                        http://www.saskschools.ca/curr_content/chem30_05/2_kinetics/kinetics2_1.htm
Activation Energy                      http://www.mhhe.com/physsci/chemistry/essentialchemistry/flash/activa2.swf 
Maxwell Boltzman Curve        http://www.chm.davidson.edu/vce/kineticmoleculartheory/Maxwell.html
Potential Energy Diagrams      http://www.kentchemistry.com/links/Kinetics/PEDiagrams.htm 
Explaining Factors Tutorial    http://www.chemguide.co.uk/physical/basicrates/introduction.html
Beer's Law Tutorial                  http://hlsweb.dmu.ac.uk/ahs/elearning/RITA/Spec4/Spec4.html 
Thermochemistry & Equilibria    http://science.uwaterloo.ca/~cchieh/cact/applychem/gibbsenergy.html
Free Energy & Equilibrium            http://www.chem1.com/acad/webtext/thermeq/TE5.html#FIG13
Chemistry Rates of Reaction          http://www.s-cool.co.uk/gcse/chemistry/rates-of-reaction/revise-it/the-rate-of-a-chemical-reaction
Bond Energy Reference Site           http://www.science.uwaterloo.ca/~cchieh/cact/c120/bondel.html
Nuclear Energy Article                    http://discovermagazine.com/2009/jun/08-new-tech-could-make-nuclear-best-weapon-against-climate-change
 Good website for explaining concepts in this unit - http://www.chemguide.co.uk/physmenu.html#top
calorimetry app - http://www.chm.davidson.edu/java/calorimetry/calorimetry.html
rates of reaction & rate law -  http://www.chm.davidson.edu/java/bromate/bromate.html & http://chem.salve.edu/chemistry/predict3.asp#model
http://www.khanacademy.org/science/organic-chemistry/v/pi-bonds-and-sp2-hybridized-orbitals

 

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Week 14

Monday, May 4th, 2015

Lesson Key Questions
How can concentrations of products and reactants help determine the rate of a reaction?
What factors effect the rate of a chemical reaction? 

Lesson Sequence
Introduction to Chemical Kinetics - Mini Investigation
Rates of Reactions 1 (ppt) - calculating average rate & instantaneous rate 
Measuring the rate of reaction Note & questions
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Homework: 
Complete the questions on the Mini Investigation and/or questions on the measuring rate of reaction (skip question one) or the questions from your Hess' Law Lab 

Resources
TEDeD - Collisions 

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Wednesday, May 6th, 2015

Lesson Key Questions
 

Lesson Sequence
 
                                                                                                                               
Homework: 
 

Resources
 

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Friday, May 8th, 2015

Lesson Key Questions
 

Lesson Sequence
Finish the in class Thermochemistry Assignment

Discussion regarding Reaction Mechanisms 
                                                                                                                               
Homework: 
Practice questions 

Resources
Reaction Mechanisms (ppt) 
Elementary Rate Laws

Mechanisms and Rate Determining Step - Khan Academy
Khan Academy - Catalysts
Reaction Mechanisms
Reaction Mechanism - Brightstorm

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Tuesday, May 5th, 2015

Lesson Key Questions
How can concentrations of products and reactants help determine the rate of a reaction?
What factors effect the rate of a chemical reaction? 

Lesson Sequence
Quiz
Reaction Rates
Discussion - Factors that affect the rate of reactions 
Review - Thermochemistry & measuring the rate of reaction                    
                                                                                                                              
Homework: 
 

Resources
Factors that affect rate of reaction (ppt) 

Rate Law inquiry activity
   Resource:  Rate Law Equation (ppt)
                     Reaction Mechanisms (ppt)
Rate of Reactions (video)
Factors that Effect Reaction Rate (video)
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Thursday, May 7th, 2015

Lesson Key Questions
 

Lesson Sequence
In Class Thermochemistry assignment 
                                                                                                                               
Homework: 
 

Resources
 

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Week 13

Wednesday, April 29th, 2015

Lesson Key Questions
How can we use the bond energies of the reactants and products to determine the enthalpy of reaction? 

Lesson Sequence
Quiz - Enthalpy changes

Using bond energies to determine the enthalpy change of a reaction. 
Practice - Sage and Scribe calculating Enthalpy change using bond energies

Intro to Hess' Law (ppt) Note with questions (did not get to this)
                                                                                                                               
Homework: 
Complete one of the two last questions on the sage N scribe worksheet, read over the Hess' Law handout and complete at least one question from it for tomorrow. 
Practice practice practice.  Take a look at the communicating enthalpy note sheet and measuring enthalpy notesheet and do some questions. The answers are on the bulletin board outside of class. 

Resources
Bond Energies ppt (Slides 27-33) 
Hess' Law Tutorial video
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Friday, May 1st, 2015

Lesson Key Questions
How do thermochemical equations express energy changes?
How can we use standard enthalpies of formation to calculate the heat of a chemical reaction?   

Lesson Sequence
Quiz - Hess' Law
Investigation 2 - Hess' Law

Standard Enthalpy of Formation - questions (ppt)
                                                                                                                               
Homework: 
Complete questions on the Enthalpy of Formation note sheet 

Resources
 Enthalpy of Formation tutorial video 
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Tuesday, April 28th, 2015

Lesson Key Questions
How can we use standard enthalpies of formation to calculate the heat of a chemical reaction?
How can Hess's Law be used to calculate energy changes in a chemical reaction? 

Lesson Sequence
Quiz - What is Enthalpy?
Molar Enthalpy...take three (ppt)
4 ways to represent enthalpy changes                                                                                                                                              
Homework: 
Finish the learning checkpoint on slide 24. Draw a thermochemical equation (both ways) & a potential energy diagram for this reaction.  

Resources
The Christmas Story - Flash freezing video
Thermochemical equations practice video






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Thursday, April 30th, 2015

Lesson Key Questions


Lesson Sequence
Quiz - Bond Energies

Hess' Law - Investigation 2
Hess' law Note                                                                                                                                              
Homework: 
Complete some questions on the Hess' Law worksheet
Read over the Standard enthalpy of formation notesheet & the lab sheet  

Resources










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Week 12

Monday, April 20th, 2015

Lesson Key Questions
What is Thermodynamics?
What are the Laws of Thermodynamics?
How can energy changes be measured? 

Lesson Sequence
Introduction to Thermochemistry
Melting Ice Demo & Class discussion - just what is going on?
DEMO - exothermic & endothermic
TPS - What are the most important factors of the DEMO that could be used to calculate the energy released?

Energy Note & Questions

Exit Card - Describe how to calculate the energy released from a chemical reaction using temperature change.   
                                                                                                                               
Homework: 
prepare for the test

Resources
Intro to thermochemistry video


Thermochemistry (ppt)
Heat and Energy video
Specific Heat Capacity 
The Christmas Story - Flash freezing video
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Wednesday, April 22nd, 2015

Lesson Key Questions
How can energy changes be measured? 
What is calorimetry?

Lesson Sequence
Calorimetry -  
**Work period since majority of the class was away for sports.  
​                                                                                                                                             

Homework: 
 

Resources
Calorimetry video; video 2

Measuring the change in heat of a mass video 

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Friday, April 24th, 2015

Lesson Key Questions
 

Lesson Sequence
Enthalpy                                                                                                                                           
Homework: 
 

Resources
Enthalpy video

Hess' Law video
Enthalpies of Formation video
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Tuesday, April 21st, 2015

Lesson Key Questions
 

Lesson Sequence
Chapter 4 Test

Energy cont'd                                                                                                                                                 
Homework: 
 Questions & Thermodynamics Vocabulary Sheet (pdf)   

Resources
Intro to thermochemistry video

Thermochemistry (ppt)
Heat and Energy video
Specific Heat Capacity 
The Christmas Story - Flash freezing video









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Thursday, April 23rd, 2015

Lesson Key Questions
How can energy changes be measured? 
What is calorimetry? 

Lesson Sequence
Quiz - What is Heat?
Discussion - How can we measure the heat absorbed/produced from our baggie DEMO?
Lab 1: Measuring the temperature of our Bunsen burners
Exit Card                                                                                                                                                
Homework: 
 

Resources
What is Energy - SciShow

Calorimetry video

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