Chemistry 221 Audio Lecture from September 23, 2015 covering Chapter 1 including states of matter, density, physical/chemical changes, and more. http://mhchem.org/221/classroom/zAudio/092315Chemistry221AudioLecture.mp3

Chemistry 221 Video Lecture from September 21, 2015 covering Chapter 1 including an intro to the class, an overview of elements and atoms, and more. http://mhchem.org/221/classroom/zAudio/092115Chemistry221Lecture.m4v

Chemistry 221 Audio Lecture from September 21, 2015 covering Chapter 1 including an intro to the class, an overview of elements and atoms, and more. http://mhchem.org/221/classroom/zAudio/092115Chemistry221AudioLecture.mp3

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. http://mhchem.org/221/classroom/zAudio/zChemVideos/TopLoadingBalance.mp4

A screencast from Chapter 1 in CH 221 which examines the two most important concepts from Chapter One: significant figures and scientific notation. http://mhchem.org/221/classroom/zAudio/Ch01SigFigsSciNot.mp4

A screencast from Chapter 1 in CH 221 which looks at the three temperature scales used by chemists frequently. http://221.mhchem.org/classroom/zAudio/Ch01Temperature_2.mp4

A screencast from Chapter 1 in CH 221 that provides an overview of density, a useful physical property often utilized by chemists. http://221.mhchem.org/classroom/zAudio/Ch01Density_2.mp4

A screencast from Chapter 1 in CH 221 which discusses the States of Matter commonly found on the Earth. http://221.mhchem.org/classroom/zAudio/Ch01StatesOfMatter_2.mp4

A screencast from Chapter 1 in CH 221 which introduces the field of chemistry. http://221.mhchem.org/classroom/zAudio/Ch01Intro_2.mp4

This is the video introduction to Chapter Guide Lesson One (which covers Chapter One in our textbook) for Chemistry 221. http://221.mhchem.org/classroom/zAudio/CH221CG01_2.mp4