A screencast from Chapter 2 Part 2 in CH 221 that provides an overview of molar mass and how it applies to compounds. https://mhchem.org/221/classroom/zAudio/Ch03MolarMass.mp4

A screencast from Chapter 2 Part 2 in CH 221 that looks at acids, bases and hydrated compounds (called hydrates.) https://mhchem.org/221/classroom/zAudio/Ch03AcidBaseHydrate.mp4

A screencast from Chapter 2 Part 2 in CH 221 that introduces covalent molecules and covalent bonding. https://mhchem.org/221/classroom/zAudio/Ch03Covalent.mp4

A screencast from Chapter 2 Part 2 in CH 221 that gives a sort of "self quiz" on polyatomic nomenclature. You can use the controls on your player to stop/start the quiz. https://mhchem.org/221/classroom/zAudio/Ch03PolyatomicQuiz.mp4

A screencast from Chapter 2 Part 2 in CH 221 which examines polyatomic ions. Try to memorize as many of these as you can! https://mhchem.org/221/classroom/zAudio/Ch03PolyatomicIons.mp4

A screencast from Chapter 2 Part 2 in CH 221 that discusses electrostatic forces and Coulomb's Law as applied to ionic bonding. https://mhchem.org/221/classroom/zAudio/Ch03Coulomb.mp4

A screencast from Chapter 2 Part 2 in CH 221 that examines cations and anions in ionic bonds. https://mhchem.org/221/classroom/zAudio/Ch03Ions.mp4

A screencast from Chapter 2 Part 2 in CH 221 that provides an overview of allotropes of elements and the most important seven diatomics. https://mhchem.org/221/classroom/zAudio/Ch03HONClBrIF.mp4

A screencast from Chapter 2 Part 2 in CH 221 that provides an overview of compounds and their smallest component, a molecule. https://mhchem.org/221/classroom/zAudio/Ch03Molecules.mp4

This is the video introduction to Chapter Guide Lesson Three (which covers the second portion of Chapter Two in our textbook) for Chemistry 221. https://mhchem.org/221/classroom/zAudio/CH221CG03.mp4