General Chemistry Resources

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!  The working nomenclature flowchart

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 NA
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  Pressure 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 examples

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