MhChem Chemistry with Dr. Michael Russell

101626 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 16 Oct 2026 10:25:01 -0700

Chemistry 221 L1 Video Lecture from October 16, 2026.

This video covers Day 3 of an Exam Review for the upcoming midterm Exam I.

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

Let me know if you have any questions! Peace!

Exam I Review Session Complete Lecture

mike.russell@mhchem.org — Wed, 14 Oct 2026 11:08:38 -0700

This video shows the Complete Lecture for the Exam I Review in CH 221.

CH 221 - A Video Introduction to Midterm Exam I

Wed, 14 Oct 2026 11:08:35 -0700

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

101526 L2 Chemistry 221 Video Lecture Part III

marsmars2@mac.com — Thu, 15 Oct 2026 13:04:58 -0700

Chemistry 221 L2 Video Lecture from October 15, 2026, Part 3 of 3.

This video covers Part 3 of an Exam Review for the upcoming midterm Exam I.

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

Let me know if you have any questions! Peace!

101526 L2 Chemistry 221 Video Lecture Part II

marsmars2@mac.com — Thu, 15 Oct 2026 12:44:45 -0700

Chemistry 221 L2 Video Lecture from October 15, 2026, Part 2 of 3.

This video covers Part 2 of an Exam Review for the upcoming midterm Exam I.

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

Let me know if you have any questions! Peace!

101526 L2 Chemistry 221 Video Lecture Part I

marsmars2@mac.com — Thu, 15 Oct 2026 12:20:41 -0700

Chemistry 221 L2 Video Lecture from October 15, 2026, Part 1 of 3.

This video covers Part 1 of an Exam Review for the upcoming midterm Exam I.

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

Let me know if you have any questions! Peace!

101426 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 14 Oct 2026 10:43:38 -0700

Chemistry 221 L1 Video Lecture from October 14, 2026.

This video covers Day 2 of an Exam Review for the upcoming midterm Exam I.

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

Let me know if you have any questions! Peace!

101226 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 12 Oct 2026 10:32:04 -0700

Chemistry 221 L1 Video Lecture from October 12, 2026.

This video covers Chapter 3 including charges (nonmetals, fixed metals and variable charge metals), polyatomic ions, acids, bases, and more. We also started an Exam Review for the upcoming midterm Exam I.

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

Let me know if you have any questions! Peace!

100926 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 09 Oct 2026 10:20:44 -0700

Chemistry 221 L1 Video Lecture from October 9, 2026.

This video covers Chapter 3 including the n+l rule, the Aufbau diagram, electron configurations for atoms and ions, Hunds rule, periodic trends and more.

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

Let me know if you have any questions! Peace!

Chapter 3 Complete Lecture Part II

mike.russell@mhchem.org — Thu, 08 Oct 2026 13:38:45 -0700

This the Complete Lecture for Chapter 3. This episode is part 2 of 2 episodes.

Chapter 3 Complete Lecture Part I

mike.russell@mhchem.org — Thu, 08 Oct 2026 13:38:49 -0700

This the Complete Lecture for Chapter 3. This episode is part 1 of 2 episodes.

Chapter 3 Screencast - Covalent Compounds, Acids, Bases, Hydrates

Thu, 08 Oct 2026 13:38:52 -0700

A screencast from Chapter 3 in CH 221 entitled “Covalent Compounds, Acids, Bases, Hydrates

Chapter 3 Screencast - Naming Ionic Compounds / Polyatomic Ions

Thu, 08 Oct 2026 13:38:55 -0700

A screencast from Chapter 3 in CH 221 entitled “Naming Ionic Compounds / Polyatomic Ions”

Chapter 3 Screencast - Periodic Trends

Thu, 08 Oct 2026 13:38:58 -0700

A screencast from Chapter 3 in CH 221 entitled “Periodic Trends”

Chapter 3 Screencast - Atomic Electron Configurations

Thu, 08 Oct 2026 13:39:02 -0700

A screencast from Chapter 3 in CH 221 entitled “Atomic Electron Configurations”

Chapter 3 Screencast - The Pauli Exclusion Principle / n+l Rule

Thu, 08 Oct 2026 13:39:05 -0700

A screencast from Chapter 3 in CH 221 entitled “The Pauli Exclusion Principle / n+l Rule”

Chapter 3 Screencast - nl Notation, Orbital Shapes and Nodes

Thu, 08 Oct 2026 13:39:09 -0700

A screencast from Chapter 3 in CH 221 entitled “nl Notation, Orbital Shapes and Nodes”

Chapter 3 Screencast - Schrodinger and the Four Quantum Numbers

Thu, 08 Oct 2026 13:39:13 -0700

A screencast from Chapter 3 in CH 221 entitled “Schrodinger and the Four Quantum Numbers”

Chapter 3 Screencast - de Broglie and Heisenberg

Thu, 08 Oct 2026 13:39:15 -0700

A screencast from Chapter 3 in CH 221 entitled “de Broglie and Heisenberg”

Chapter 3 Screencast - The Bohr Model

Thu, 08 Oct 2026 13:39:18 -0700

A screencast from Chapter 3 in CH 221 entitled “The Bohr Model”

Chapter 3 Screencast - Photoelectric Effect / nm to kJ Conversions

Thu, 08 Oct 2026 13:39:21 -0700

A screencast from Chapter 3 in CH 221 entitled “Photoelectric Effect / nm to kJ Conversions”

Chapter 3 Screencast - Planck's Constant

Thu, 08 Oct 2026 13:39:25 -0700

A screencast from Chapter 3 in CH 221 entitled “Planck's Constant”

Chapter 3 Screencast - Waves and Frequencies for Electromagnetic Radiation

Thu, 08 Oct 2026 13:39:29 -0700

A screencast from Chapter 3 in CH 221 entitled “Waves and Frequencies for Electromagnetic Radiation”

CH 221: A Video Introduction to Chapter Guide Three

Thu, 08 Oct 2026 13:39:33 -0700

This is the video introduction to Chapter Guide Three for Chemistry 221.

100826 L2 Chemistry 221 Video Lecture Part III

marsmars2@mac.com — Thu, 08 Oct 2026 13:37:36 -0700

Chemistry 221 L2 Video Lecture from October 8, 2026., Part 3 of 3.

This video covers Chapter 3 including placing electrons in atoms (the Aufbau diagram), diamagnetic and paramagnetic, spectroscopic and orbital box notation, periodic trends, nomenclature and more.

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

Let me know if you have any questions! Peace!

100826 L2 Chemistry 221 Video Lecture Part II

marsmars2@mac.com — Thu, 08 Oct 2026 13:31:43 -0700

Chemistry 221 L2 Video Lecture from October 8, 2026., Part 2 of 3.

This video covers Chapter 3 including the de Broglie wave equation, Heisenberg's uncertainty principle, Schrodinger's wave equation, the four quantum numbers, nl notation, and more.

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

Let me know if you have any questions! Peace!

100826 L2 Chemistry 221 Video Lecture Part I

marsmars2@mac.com — Thu, 08 Oct 2026 13:09:57 -0700

Chemistry 221 L2 Video Lecture from October 8, 2026., Part 1 of 3.

This video covers Chapter 3 including the electromagnetic spectrum, frequency, wavelength, the speed of light, energy and Planck's constant, the photoelectric effect, the Bohr model for the atom, converting nm to kJ/mol, energy levels n, absorbance and emissions and more.

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

Let me know if you have any questions! Peace!

100726 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 07 Oct 2026 10:26:05 -0700

Chemistry 221 L1 Video Lecture from October 7, 2026.

This video covers Chapter 3 including the Heisenberg uncertainty principle, Schrodinger, the four quantum numbers, nl notation, types of orbitals, and more.

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

Let me know if you have any questions! Peace!

100526 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 05 Oct 2026 11:01:50 -0700

Chemistry 221 L1 Video Lecture from October 5, 2026.

This video covers Chapter 3 including the photoelectric effect, the Bohr model for the atom, converting nm to kJ/mol, energy levels n, absorbance and emissions, the de Broglie wave equation, and more.

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

Let me know if you have any questions! Peace!

100226 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 02 Oct 2026 10:33:12 -0700

Chemistry 221 L1 Video Lecture from October 2, 2026.

This video covers Chapter 2 and Chapter 3 including finding the molar mass of a compound, the electromagnetic spectrum, frequency, wavelength, the speed of light, energy and Planck's constant, and more.

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

Let me know if you have any questions! Peace!

Chapter 2 Complete Lecture Part II

mike.russell@mhchem.org — Fri, 02 Oct 2026 10:34:49 -0700

This the Complete Lecture for Chapter 2. This episode is part 2 of 2 episodes.

Chapter 2 Complete Lecture Part I

mike.russell@mhchem.org — Fri, 02 Oct 2026 10:34:51 -0700

This the Complete Lecture for Chapter 2. This episode is part 1 of 2 episodes.

Chapter 2 Screencast - The Mole and Molar Mass

Fri, 02 Oct 2026 10:34:54 -0700

A screencast from Chapter 2 in CH 221 entitled “The Mole and Molar Mass”

Chapter 2 Screencast - Empirical Formulas and Isomers

Fri, 02 Oct 2026 10:34:57 -0700

A screencast from Chapter 2 in CH 221 entitled “Empirical Formulas and Isomers”

Chapter 2 Screencast - Chemical Formulas, the 7 Diatomics, Allotropes

Fri, 02 Oct 2026 10:35:00 -0700

A screencast from Chapter 2 in CH 221 entitled “Chemical Formulas, the 7 Diatomics, Allotropes”

Chapter 2 Screencast - Atomic Mass

Fri, 02 Oct 2026 10:35:03 -0700

A screencast from Chapter 2 in CH 221 entitled “Atomic Mass”

Chapter 2 Screencast - Atomic Number and Isotopes

Fri, 02 Oct 2026 10:35:06 -0700

A screencast from Chapter 2 in CH 221 entitled “Atomic Number and Isotopes”

Chapter 2 Screencast - The Modern Atom

Fri, 02 Oct 2026 10:35:09 -0700

A screencast from Chapter 2 in CH 221 entitled “The Modern Atom”

Chapter 2 Screencast - Democritius and Dalton

Fri, 02 Oct 2026 10:35:13 -0700

A screencast from Chapter 2 in CH 221 entitled “Democritius and Dalton”

CH 221: An Video Introduction to Chapter Guide Two

Fri, 02 Oct 2026 10:35:16 -0700

This is the video introduction to Chapter Guide Two for Chemistry 221.

100126 L2 Chemistry 221 Video Lecture Part III

marsmars2@mac.com — Thu, 01 Oct 2026 11:34:01 -0700

Chemistry 221 L2 Video Lecture from October 1, 2026., Part 3 of 3.

This video covers Chapter 2 including more on molar mass and Avogadro's number, molar mass for compounds, finding the number of atoms and molecules in a sample, and more.

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

Let me know if you have any questions! Peace!

100126 L2 Chemistry 221 Video Lecture Part II

marsmars2@mac.com — Thu, 01 Oct 2026 11:47:08 -0700

Chemistry 221 L2 Video Lecture from October 1, 2026., Part 2 of 3.

This video covers Chapter 2 including atomic mass, average atomic mass (and molar mass), types of formulas, the 7 diatomics, empirical and molecular formulas, the mole and molar mass and more.

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

Let me know if you have any questions! Peace!

100126 L2 Chemistry 221 Video Lecture Part I

marsmars2@mac.com — Thu, 01 Oct 2026 12:13:30 -0700

Chemistry 221 L2 Video Lecture from October 1, 2026., Part 1 of 3.

This video covers Chapter 2 including the nature of the atom, protons, electrons, neutrons, atomic number, mass number, ions of atoms, and more.

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

Let me know if you have any questions! Peace!

093026 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 30 Sep 2026 10:30:25 -0700

Chemistry 221 L1 Video Lecture from September 30, 2026.

This video covers Chapter 2 including atomic mass, average atomic mass (and molar mass), types of formulas, the 7 diatomics, empirical and molecular formulas, the mole and molar mass and more.

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

Let me know if you have any questions! Peace!

092826 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 28 Sep 2026 10:42:14 -0700

Chemistry 221 L1 Video Lecture from September 28, 2026.

This video covers Chapter 1 and Chapter 2 including mass percent, the nature of the atom, protons, electrons, neutrons, atomic number, mass number, ions of atoms and more.

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

Let me know if you have any questions! Peace!

092526 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 25 Sep 2026 10:35:39 -0700

Chemistry 221 L1 Video Lecture from September 25, 2026.

This video covers Chapter 1 including volume, density, precision, accuracy, significant figures, and more.

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

Let me know if you have any questions! Peace!

092426 L2 Chemistry 221 Video Lecture Part III

marsmars2@mac.com — Thu, 24 Sep 2026 12:47:40 -0700

Chemistry 221 L2 Video Lecture from September 24, 2026., Part 3 of 3.

This video covers Chapter 1 including significant figures, doubtful digits, rounding, the differences between multiplying/dividing and adding/subtracting, mass percentages, and more.

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

Let me know if you have any questions! Peace!

092426 L2 Chemistry 221 Video Lecture Part II

marsmars2@mac.com — Thu, 24 Sep 2026 12:31:08 -0700

Chemistry 221 L2 Video Lecture from September 24, 2026., Part 2 of 3.

This video covers Chapter 1 including a discussion of the periodic table, groups periods, chemical and physical properties, mass, length, temperature scales, volume, density, and more.

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

Let me know if you have any questions! Peace!

092426 L2 Chemistry 221 Video Lecture Part I

marsmars2@mac.com — Thu, 24 Sep 2026 12:17:23 -0700

Chemistry 221 L2 Video Lecture from September 24, 2026., Part 1 of 3.

This video covers Chapter 1 including a discussion of 'what is chemistry?', matter versus weight, phases of matter, the kinetic molecular theory, elements and compounds, and more.

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

Let me know if you have any questions! Peace!

092326 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 23 Sep 2026 11:00:24 -0700

Chemistry 221 L1 Video Lecture from September 23, 2026.

This video covers Chapter 1 including a discussion of the periodic table, groups periods, chemical and physical properties, mass, length, temperature scales, and more.

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

Let me know if you have any questions! Peace!

092126 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 21 Sep 2026 10:33:18 -0700

Chemistry 221 L1 Video Lecture from September 21, 2026.

This video covers Chapter 1 including a discussion of 'what is chemistry?', matter versus weight, phases of matter, the kinetic molecular theory, elements and compounds, and more.

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

Let me know if you have any questions! Peace!

Chapter 1 Complete Lecture Part II

mike.russell@mhchem.org — Mon, 10 Aug 2026 08:57:38 -0700

This the Complete Lecture for Chapter 1. This episode is part 2 of 2 episodes.

Chapter 1 Complete Lecture Part I

mike.russell@mhchem.org — Mon, 10 Aug 2026 08:57:41 -0700

This the Complete Lecture for Chapter 1. This episode is part 1 of 2 episodes.

Chapter 1 Screencast - Sig Figs and Calculations / Scientific Notation

Mon, 10 Aug 2026 08:57:44 -0700

A screencast from Chapter 1 in CH 221 entitled "Sig Figs and Calculations / Scientific Notation"

Chapter 1 Screencast - Significant Figures (Sig figs)

Mon, 10 Aug 2026 08:57:47 -0700

A screencast from Chapter 1 in CH 221 entitled "Significant Figures (Sig figs)"

Chapter 1 Screencast - Precision and Accuracy

Mon, 10 Aug 2026 08:57:51 -0700

A screencast from Chapter 1 in CH 221 entitled "Precision and Accuracy"

Chapter 1 Screencast - Density

Mon, 10 Aug 2026 08:57:54 -0700

A screencast from Chapter 1 in CH 221 entitled "Density"

Chapter 1 Screencast - Temperature and Volume

Mon, 10 Aug 2026 08:57:57 -0700

A screencast from Chapter 1 in CH 221 entitled "Temperature and Volume"

Chapter 1 Screencast - Measurements, Metrics, Length, Mass, Time

Mon, 10 Aug 2026 08:58:00 -0700

A screencast from Chapter 1 in CH 221 entitled "Measurements, Metrics, Length, Mass, Time"

Chapter 1 Screencast - The Periodic Table

Mon, 10 Aug 2026 08:58:05 -0700

A screencast from Chapter 1 in CH 221 entitled "The Periodic Table"

Chapter 1 Screencast - Mixtures, Elements and Compounds

Mon, 10 Aug 2026 08:58:08 -0700

A screencast from Chapter 1 in CH 221 entitled "Mixtures, Elements and Compounds"

Chapter 1 Screencast - Phases, Mass and Weight

Mon, 10 Aug 2026 08:58:11 -0700

A screencast from Chapter 1 in CH 221 entitled "Phases, Mass and Weight"

Chapter 1 Screencast - Domains of Chemistry

Mon, 10 Aug 2026 08:58:13 -0700

A screencast from Chapter 1 in CH 221 entitled "Domains of Chemistry"

Chapter 1 Screencast - What is Chemistry?

Mon, 10 Aug 2026 08:58:17 -0700

A screencast from Chapter 1 in CH 221 entitled "What is Chemistry?"

CH 221: A Video Introduction to Chapter Guide One

Mon, 10 Aug 2026 08:58:21 -0700

This is the video introduction to Chapter Guide One for Chemistry 221.

Getting Started in Chemistry with Dr. Russell!

Mon, 10 Aug 2026 08:58:24 -0700

Welcome! This is a video to help students get started in Dr. Russell’s chemistry classes at Mt. Hood Community College in Gresham, Oregon, USA.

Website: http://mhchem.org

Let me know if you have any questions! Peace!

Finding AC 1303, AC 2501, AC 2507 AC 2568 and AC 2607

Wed, 23 Jul 2025 11:21:24 -0700

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!

Welcome to Chemistry 221!

Mon, 10 Aug 2026 08:58:28 -0700

Welcome to Chemistry 221 with Dr. Michael Russell!