A screencast from Chapter 4 in CH 221 which looks at percent composition and how the chemical reaction can assist in its determination. https://mhchem.org/221/classroom/zAudio/Ch04MassPercent.mp4

A screencast from Chapter 4 in CH 221 which examines methods used to find empirical formulas of hydrocarbons through combustion analysis. https://mhchem.org/221/classroom/zAudio/Ch04HydrocarbonEF.mp4

A screencast from Chapter 4 in CH 221 which examines methods used to find empirical formulas of hydrocarbons containing oxygen through combustion analysis. https://mhchem.org/221/classroom/zAudio/Ch04EFCHO.mp4

A screencast from Chapter 3 in CH 221 which introduces solutions in chemistry. https://mhchem.org/221/classroom/zAudio/Ch05SolutionsIntro.mp4

A screencast from Chapter 4 in CH 221 that looks at net ionic reactions - the "action of the reaction" - as well as precipitation reactions. https://mhchem.org/221/classroom/zAudio/Ch05NetIonicPPTRxn.mp4

A screencast from Chapter 4 in CH 221 that looks at more reaction types: acid/base, gas-forming and combustion reactions. https://mhchem.org/221/classroom/zAudio/Ch05ABGFCombRxn.mp4

A screencast from Chapter 3 in CH 221 which examines acids and bases in greater detail. https://mhchem.org/221/classroom/zAudio/Ch05AcidsBases.mp4

This is a lab video which shows how to use a Bunsen Burner. We shall be using them in the upcoming "Percent Potassium Chlorate" lab.... and several times afterwards as well. https://mhchem.org/221/classroom/zAudio/BunsenBurner.mp4

A screencast from Chapter 2 Part 2 in CH 221 which looks at the relationship between empirical and molecular formulas when determining the identity of a compound. https://mhchem.org/221/classroom/zAudio/Ch03EFMF.mp4

A screencast from Chapter 2 Part 2 in CH 221 that examines percent composition and how it can lead to an empirical formula. https://mhchem.org/221/classroom/zAudio/Ch03PercentComposition.mp4