This is the audio introduction to Chapter Guide Lesson Five (which covers Chapters Three through Five in our textbook) for Chemistry 221. https://mhchem.org/221/classroom/zAudio/Ch05.mp3

A screencast from Chapter 4 in CH 221 which looks at oxidation numbers and their use in redox reactions. https://mhchem.org/221/classroom/zAudio/Ch05RedoxOxNums.mp4

A screencast from Chapter 4 in CH 221 which offers tips on recognizing redox reactions. https://mhchem.org/221/classroom/zAudio/Ch05RedoxRecognize.mp4

A screencast from Chapter 3 in CH 221 that introduces molarity and solution concentration. https://mhchem.org/221/classroom/zAudio/Ch05Molarity.mp4

A screencast from Chapter 3 in CH 221 which examines how solutions can be prepared from dilution methods. https://mhchem.org/221/classroom/zAudio/Ch05SolnDiln.mp4

A screencast from Chapter 4 in CH 221 which examines the pH scale and solution stoichiometry. https://mhchem.org/221/classroom/zAudio/Ch05pHSolnStoich.mp4

A screencast from Chapter 4 in CH 221 that examines titrations and their usefulness. https://mhchem.org/221/classroom/zAudio/Ch05Titrations.mp4

This is a lab video which shows how to use the analytical balance. We shall be using them in the upcoming "Determination of an Unknown Chloride" lab. https://mhchem.org/221/classroom/zAudio/AnalyticalBalance.mp4

A screencast from Chapter 5 in CH 221 which introduces energy from a chemistry perspective. https://mhchem.org/221/classroom/zAudio/Ch06IntroEnergy.mp4

A screencast from Chapter 5 in CH 221 that introduces Thermodynamics, the science of energy transfer. https://mhchem.org/221/classroom/zAudio/Ch06Thermodynamics.mp4