General Chemistry Lab Manual Appendices
General Chemistry I Videos
Below is the video archive for Chem 220, General Chemistry I. The preclass videos are short introductions to the topic of the day and introduce some terminology and simple concepts that are further developed in class. The post class videos are more in depth and usually cover a concept or type of problem that students find difficult. They are not meant to be a comprehensive review of all of the material covered in class.
Chapter 1
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| Accuracy, precision and significant figures | NA | Target practice and significant figures |
| Dimensional analysis and problem solving | NA | Problem solving example |
Chapter 2
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| Atomic structure | What are atoms? | Summary of parts of the atom |
| Representing molecules and the periodic table | A short history of the periodic table | NA |
| Nomenclature | What you need to know before naming a compound! | Naming compounds |
Chapter 3
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| Atomic mass, molar mass and the mole | How much is a mole of marshmellows? | Using moles in conversion factors |
| Chemical reactions and formulas | What is a formula? What is a chemical reaction? | Empirical formulas and balancing equations |
| Stoichiometry | What is stoichiometry? | A detailed stoichiometry example |
| Limiting reagents | A limiting reagent analogy | A detailed limiting reagent example |
| Solutions | What is a solution | NA |
Chapter 4
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| Ionic compounds in water | When ionic compounds dissolve | Net ionic equations, why bother? |
| Precipitation reactions and acid/base reactions | Swapping partners in precipitation reactions | Review of acid-base reactions |
| Redox reactions and solution stoichiometry | Redox chemistry | Summary of redox reactions and solution stoichiometry |
Chapter 5
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| Gas pressure and gas laws | It's a gas! | Gas Law Problem solving I Gas Laws Problem solving II |
| Gas mixtures and gasses in reactions | Gas Mixtures | What is partial pressure and a bit more stoichiometry |
| Kinetic molecular theory | Intro to probability curves or histograms | Summary of KMT and calculation of molecular speed! |
Chapter 6
| Topic | Preclasss Intro Video | Postclass Video |
|---|---|---|
| Chemical energy and heat capacity | Energy diagrams and ∆E | Does breaking bonds release energy? |
| Calorimetry and ∆H | The system and the surroundings | A long calorimetry example problem |
| Hess’s Law | Defining symbols used in thermochemistry | Two sample problems using Hess’s Law and ∆Hf |
Chapter 7
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| Light, emission spectra and the Bohr model of the atom | Waves, energy and quanta | IssacsTEACH video about the Bohr Model of the atom |
| The nature of the electron and atomic orbitals | Cool standing waves video | Summary of Heisenberg, DeBroglie and orbital shapes |
Chapter 8
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| Electron configurations | Aufbau! Energy diagrams and orbitals | Khan academy links Electron configurations 1: Electron configurations 2: |
| Eelctron configurations of ions, Zeff and sizes of atoms and ions | What is effective nuclear charge? | Summary of ionic configurations, Zeff and atomic size |
| Periodic trends and Lewis dot symbols | Why electrons transfer from a metal to a non-metal | Recap of IE, EA and ionic attraction |
Chapter 9
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| Covalent bonds and Lewis structures | Staying connected: bonds between non-metals | Review of simple Lewis structures, electronegativity and bond polarity |
| Exceptions to the octet rule. Bond strength and length | Using bond strengths to calculate ∆Hrxn | Sample calculation of ∆Hrxn from bonds strengths and Lewis structures |
Chapter 10
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| More sophisticated views of Lewis Structures | Terminology related to Lewis Structures | Example Lewis structure: calculating formal charge, bond orders and resonance |
| VSEPR | 3D molecules in a 2D world | Applying VESPR: 2 examples |
| Molecular polarity | Molecular polarity: a balancing act | Molecular polarity and shape |
Chapter 11
| Topic | Preclass Intro Video | Postclass Video |
|---|---|---|
| Valence bond theory | How carbon makes four bonds | NA |
General Chemistry II Videos
Below is the video archive for Chem 230, General Chemistry II. The preclass videos are short introductions to the topic of the day and introduce some terminology and simple concepts that are further developed in class. The post class videos are more in depth and usually cover a concept or type of problem that students find difficult. They are not meant to be a comprehensive review of all of the material covered in class.
Kinetics
| Preclass Intro Video | Postclass Video | |
|---|---|---|
| Reaction Rates | NA | Rate expressions and the triple decker sandwich analogy |
| Rate Laws | Demo of how concentration effects rate | Problem solving: the method of initial rates |
| Time dependence | Predicting the future using integrated rate laws | Problem solving: using integrated rate laws and half life |
| Energy Diagrams and Temperature dependence | The reaction coordinate diagram | Collision theory and Arrhenius equation problem solving |
| Reaction mechanisms and catalysis | What is a chemical mechanism? | Mommy, where do mechanisms come from? |
Thermodynamics
| Preclass Intro Video | Postclass Video | |
|---|---|---|
| Introduction and entropy | Introduction to entropy | Factors that affect entropy: predicting spontaneity |
| Gibb’s free energy and spontaneity | Introduction to Gibb's free energy | The second law and ∆G=∆H-TS |
| Using tabulated values | Standard conditions and calculating ∆H for a reaction | Using tabulated thermodynamic values in calculations |
Equilibrium
| Preclass Intro Video | Postclass Video | |
|---|---|---|
| Intro to equilibrium | Some reactions don't go all the way, an introduction to equilibrium | Kc and Kp, What's up with that? |
| Calculating equilibrium constrants and reaction quotients | Calculating K's: Our first ICE table | Calculating K's: Using ICE tables |
| Equilibrium and thermodynamics | ∆G at non-standard concentrations | How are equilibrium and thermodynamics related? |
| Le Chatelier's Principle | Intro to Lechatelier's Principle | Mini-lecture on Lechatelier's Principle |
Acid-base equilibrium
| Preclass Intro Video | Postclass Video | |
|---|---|---|
| Intro to acids and bases | Basics of acids (and bases) | Intro to acids and bases |
| Strong and weak acids and bases | Strong and weak acids and bases | Solving weak acid dissociation problems |
| Acid-base calculations | Starting acid/base problems | Calculating pH of a salt solution |
| Salt solutions and intro to buffers | Calculating pH of a salt solution | |
| Acid-base titrations | Calculating pH at the equivalence point |
Electrochemistry
| Preclass Intro Video | Postclass Video | |
|---|---|---|
| Oxidation numbers and redox reactions | Balancing a redox reaction in basic solution | |
| Electrochemical cells and cell potentials | Have you seen my Red Cat? | A summary of electrochemical cells |
| Cell potential, equilibrium and free energy | E° must be related to ∆G and K, right? | |
| The Nernst Equation | Problem solving using the Nernst equation | |
| Electrolysis, Solar energy and batteries | Tyler, where do batteries come from? | Solving electrolysis problems |