This is the audio 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/Ch03.mp3

A screencast from Chapter 2 Part 1 in CH 221 which examines the periodic table, the most important cheat cheat ever created! *smiles* :) https://mhchem.org/221/classroom/zAudio/Ch02PeriodicTable.mp4

A screencast from Chapter 2 Part 1 in CH 221 which introduces the mole, the important counting number for chemists. https://mhchem.org/221/classroom/zAudio/Ch02TheMole.mp4

This is the video introduction to Chapter Guide Lesson Two (which covers the first portion of Chapter Two in our textbook) for Chemistry 221. https://mhchem.org/221/classroom/zAudio/CH221CG02.mp4

This is a lab video which shows how to use a top loading balance. We shall be using them in the upcoming "Density" lab.... and several times afterwards as well. https://mhchem.org/221/classroom/zAudio/zChemVideos/TopLoadingBalance.mp4

An introductory video for my CH 223 class. https://mhchem.org/223/classroom/zAudio/CH223Intro.mp4

A screencast from Chapter 10 in CH 222 that talks about critical temperature and pressure. https://mhchem.org/222/classroom/zAudio/Ch13PhaseTempCrit.mp4

An introductory video for my CH 222 class. https://mhchem.org/222/classroom/zAudio/CH222Intro.mp4

This video offers a few tips and tricks on how to prepare for Class Presentations in CH 222. https://mhchem.org/221/classroom/zAudio/CH221CGCP.mp4

This is the audio introduction to Chapter Guide Lesson Four (which covers Chapter Four in our textbook) for Chemistry 221. https://mhchem.org/221/classroom/zAudio/Ch04.mp3