A screencast from Chapter 5 in CH 221 which looks at energy changes with no change of state - the q = mC(del)T equation

A screencast from Chapter 5 in CH 221 which examines energy changes with a change of state.

A screencast from Chapter 5 in CH 221 which introduces enthalpy, (del)H, Hess's Law and how they can assist the chemist.

A screencast from Chapter 5 in CH 221 which looks at heat of formation values and Hess's Law.

A screencast from Chapter 5 in CH 221 which continues to look at the utility of heats of formation for reactions.

This video offers a few tips and tricks on how to prepare for the first midterm exam in CH 221.

This is the audio introduction to Chapter Guide Lesson Three (which covers the second portion of Chapter Two in our textbook) for Chemistry 221.

This is the video introduction to Chapter Guide Lesson Three (which covers the second portion of Chapter Two in our textbook) for Chemistry 221.

A screencast from Chapter 2 Part 2 in CH 221 that provides an overview of compounds and their smallest component, a molecule.

A screencast from Chapter 2 Part 2 in CH 221 that provides an overview of allotropes of elements and the most important seven diatomics.