CH 221 Screencasts

What are Screencasts?

If absent from lecture, you may wish to watch and listen to the following screencasts (short video lectures.) The daily lecture recordings are available via a podcast, YouTube and an RSS feed. Questions should always be directed to the instructor.

Chapter Screencast
1 An Introduction to Chemistry
  States of Matter
  Density
  Temperature Scales
  Significant Figures and Scientific Notation
  Using the Top Loading Balances (helpful in the Density of Liquids and Solids lab)
   
2 Part 1 The Atomic Number
  Isotopic Abundance
  The Mole
  The Periodic Table
   
2 Part 2 Compounds and Molecules
  The Seven Diatomics
  Cations and Anions
  Electrostatic Forces and Coulomb's Law
  Polyatomic Ions
  Polyatomic Ions Self Quiz (helpful in the Chemical Nomenclature lab)
  Covalent Molecules
  Acids, Bases and Hydrates
  Molar Mass
  Percent Composition
  Empirical Formulas and Molecular Formulas
  Using the Hot Plate and Stirrer (helpful in the Determination of an Empirical Formula lab)
  Using the Bunsen Burner (helpful in the Percent Potassium Chlorate in a Mixture lab)
   
4 Part I The Chemical Reaction
  Balancing Chemical Reactions
  Theoretical and Actual Yields
  Empirical Formulas of Hydrocarbons Through Combustion
  Empirical Formulas for Hydrocarbons with Oxygen
  Limiting Reactants
  Percent Composition
   
4 Part II An Introduction to Solutions
  Acids and Bases
  Net Ionic Reactions and Precipitation Reactions
  Acid/Base, Gas-Forming and Combustion Reactions
  An Introduction to Redox Reactions
  Redox Reactions: Oxidation Numbers
  Redox Reactions: Recognizing Redox Reactions
  Introduction to Molarity
  Preparing Solutions Through Dilution
  The pH Scale and Solution Stoichiometry
  Titrations
  Using the Analytical Balances (helpful in the Determination of an Unknown Chloride lab)
   
5 Introduction to Energy
  Thermodynamics
  Calculating Energy With No Changes of State (q = mCΔT)
  Calculating Energy With Changes of State
  Enthalpy
  Heats of Formation I
  Heats of Formation II
   
6 Part I An Introduction to Electromagnetic Radiation
  More About Electromagnetic Radiation
  Energy and Planck's Constant
  Bohr and Sharp Line Spectra
  Bohr's Theory
  de Broglie, Schrodinger and Heisenberg
  An Introduction to Quantum Numbers
  Types of Orbitals
   
6 Part II The Spin Quantum Number
  Distribution of Electrons in Atoms
  Electron Filling Order (the n + l rule)
  Electron Configurations for Atoms
  Electron Configurations for Ions

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