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CH 221 Podcast
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CH 221 Podcasts

If absent from lecture, you may wish to watch and listen to the following screencasts (video lectures.) The daily audio lecture recordings are also available through the iTunes interface by selecting this link. Questions should always be directed to the instructor.

Jump directly to Chapter: 1, 2 Part 1, 2 Part 2, 3, 4, 5, 6, 7

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)

3	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	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	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

7	The Spin Quantum Number
	Distribution of Electrons in Atoms
	Electron Filling Order (the n + l rule)
	Electron Configurations for Atoms
	Electron Configurations for Ions