Chemistry 221 L2 Video Lecture from September 25, 2025, Part 2 of 3.

This video covers material from Chapter 1 including more on elements and the periodic table, SI units, temperature scales, density, dimensional analysis, and more.

CH 221 website: https://mhchem.org/221

Let me know if you have any questions! Peace!

Chemistry 221 L2 Video Lecture from September 25, 2025, Part 1 of 3.

This video covers material from Chapter 1 including a discussion of "what is chemistry", types of chemistry, the importance of chemistry, atoms, molecules and mixtures, the periodic table, important groups on the periodic table, and more.

CH 221 website: https://mhchem.org/221

Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from September 24, 2025.

This video covers material from Chapter 1 including a discussion of measurements and SI units, length, mass, volume, density, temperature scales, and more.

CH 221 website: https://mhchem.org/221

Let me know if you have any questions! Peace!

Chemistry 221 L1 Video Lecture from September 22, 2025.

This video covers material from Chapter 1 including a discussion of "what is chemistry", types of chemistry, the importance of chemistry, atoms, molecules and mixtures, and more.

CH 221 website: https://mhchem.org/221

Let me know if you have any questions! Peace!

This video will help you find our four main chemistry classrooms (namely AC 1303, AC 2501, AC 2507 and AC 2607) as well as my office (AC 2568) at Mt. Hood Community College in Gresham, Oregon, USA.

To get to all of these locations, go to the "F" or "G" parking lots (or as close to them as possible), both of which are located near the main MHCC entrance on NE 29th street and NE Kane Dr. in Gresham ).

AC 1303 is on the lower level of the campus, adjacent to the Planetarium.

AC 2501, AC 2507, AC 2607 and my office (AC 2568) are located on the upper level of campus, and all are very close to the "F" and "G" parking lots. You can use the links below to find the exact location in the video which shows how to find these rooms.

Let me know if you have any questions! Peace!