MhChem Chemistry with Dr. Michael Russell

031326 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 13 Mar 2026 10:41:59 -0700

Chemistry 222 Video Lecture from March 13, 2026.

This video covers Day 2 of an Exam Review for the upcoming Lecture Final Exam. Also some student presentations were given at the beginning of class.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

CH 222 Final Exam Review Session Complete Lecture

mike.russell@mhchem.org — Wed, 11 Mar 2026 10:37:43 -0700

This video shows the Complete Lecture for the Final Exam Review in CH 222.

CH 222: A Video Introduction to the Final Exams

Wed, 11 Mar 2026 10:37:40 -0700

This video offers a few tips and tricks on how to prepare for lecture final exam and the lab final exam in CH 222.

031126 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 11 Mar 2026 10:37:15 -0700

Chemistry 222 Video Lecture from March 11, 2026.

This video covers Day 1 of an Exam Review for the upcoming Lecture Final Exam. Also some student presentations were given at the beginning of class.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

030926 Chemistry 222 Video Lecture

marsmars2@mac.com — Mon, 09 Mar 2026 10:31:48 -0700

Chemistry 222 Video Lecture from March 9, 2026.

This video covers material from Chapter 20 including fission, issues with nuclear fission, Lise Meitner and Glenn Seaborg, uses for nuclear energy and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

030626 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 06 Mar 2026 10:25:10 -0800

Chemistry 222 Video Lecture from March 6, 2026.

This video covers material from Chapter 20 including nuclear 'particles', balancing nuclear reactions, fusion, fission, and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

Chapter 20 Complete Lecture - Part II

mike.russell@mhchem.org — Wed, 04 Mar 2026 10:21:57 -0800

This the Complete Lecture for Chapter 20. This episode is part 2 of 2 episodes.

Chapter 20 Complete Lecture - Part I

mike.russell@mhchem.org — Wed, 04 Mar 2026 10:22:00 -0800

This the Complete Lecture for Chapter 20. This episode is part 1 of 2 episodes.

Chapter 20 Screencast - Fusion, Fission and Plasma

Wed, 04 Mar 2026 10:22:03 -0800

A screencast from Chapter 20 in CH 222 entitled “Fusion, Fission and Plasma”

Chapter 20 Screencast - Balancing Nuclear Reactions

Wed, 04 Mar 2026 10:22:06 -0800

A screencast from Chapter 20 in CH 222 entitled “Balancing Nuclear Reactions”

Chapter 20 Screencast - Nuclear Binding Energy

Wed, 04 Mar 2026 10:22:09 -0800

A screencast from Chapter 20 in CH 222 entitled “Nuclear Binding Energy”

Chapter 20 Screencast - Forces in the Nucleus

Wed, 04 Mar 2026 10:22:12 -0800

A screencast from Chapter 20 in CH 222 entitled “Forces in the Nucleus”

Chapter 20 Screencast - A Review of the Nucleus

Wed, 04 Mar 2026 10:22:15 -0800

A screencast from Chapter 20 in CH 222 entitled “A Review of the Nucleus”

Chapter 17 Complete Lecture Part II

Wed, 04 Mar 2026 10:22:18 -0800

This the Complete Lecture for Chapter 17. This episode is part 2 of 2 episodes.

Chapter 17 Complete Lecture Part I

Wed, 04 Mar 2026 10:22:22 -0800

This the Complete Lecture for Chapter 17. This episode is part 1 of 2 episodes.

Chapter 17 Screencast - Catalysis

Wed, 04 Mar 2026 10:22:25 -0800

A screencast from Chapter 17 in CH 222 entitled “Catalysis”

Chapter 17 Screencast - Mechanisms

Wed, 04 Mar 2026 10:22:28 -0800

A screencast from Chapter 17 in CH 222 entitled “Mechanisms”

Chapter 17 Screencast - Collision Theory and Activation Energy

Wed, 04 Mar 2026 10:22:31 -0800

A screencast from Chapter 17 in CH 222 entitled “Collision Theory and Activation Energy”

Chapter 17 Screencast - Half-Life

Wed, 04 Mar 2026 10:25:50 -0800

A screencast from Chapter 17 in CH 222 entitled “Half-Life”

Chapter 17 Screencast - The Integrated Raw Laws

Wed, 04 Mar 2026 10:25:54 -0800

A screencast from Chapter 17 in CH 222 entitled “The Integrated Raw Laws”

Chapter 17 Screencast - The Rate Law and Orders of Reaction

Wed, 04 Mar 2026 10:25:58 -0800

A screencast from Chapter 17 in CH 222 entitled “The Rate Law and Orders of Reaction”

Chapter 17 Screencast - Factors Affecting Reaction Rates

Wed, 04 Mar 2026 10:26:01 -0800

A screencast from Chapter 17 in CH 222 entitled “Factors Affecting Reaction Rates”

Chapter 17 Screencast - The Reaction Rate

Wed, 04 Mar 2026 10:26:04 -0800

A screencast from Chapter 17 in CH 222 entitled “The Reaction Rate”

CH 222: A Video Introduction to Chapter Guide Six

Wed, 04 Mar 2026 10:26:07 -0800

This is the video introduction to Chapter Guide Six for Chemistry 222.

030426 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 04 Mar 2026 10:20:40 -0800

Chemistry 222 Video Lecture from March 4, 2026.

This video covers material from Chapter 20 including a review of the nucleus, nuclear binding energy, islands of instability (and the peninsula of stability), types of radioactive 'particles', anti-matter and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

030226 Chemistry 222 Video Lecture

marsmars2@mac.com — Mon, 02 Mar 2026 10:20:46 -0800

Chemistry 222 Video Lecture from March 2, 2026.

This video covers material from Chapter 17 including the Arrhenius equation, reaction mechanisms, equilibrium constants, catalysis and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

022726 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 27 Feb 2026 10:42:51 -0800

Chemistry 222 Video Lecture from February 27, 2026.

This video covers material from Chapter 17 including half life, half life and the integrated first order rate law, activation energy, collision theory, and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

CH 222: A Video Introduction to the Class Presentations

Wed, 25 Feb 2026 10:33:19 -0800

This video offers a few tips and tricks on how to prepare for Class Presentations in CH 222.

022526 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 25 Feb 2026 10:32:57 -0800

Chemistry 222 Video Lecture from February 25, 2026.

This video covers material from Chapter 17 including rate orders, finding the rate constant, k; the integrated first order rate law, graphing and the rate laws, half-life, and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

022326 Chemistry 222 Video Lecture

marsmars2@mac.com — Mon, 23 Feb 2026 10:40:11 -0800

Chemistry 222 Video Lecture from February 23, 2026.

This video covers material from Chapter 17 including an overview of kinetics, rates in chemistry, describing rates in chemistry, factors that affect rates, and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

022026 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 20 Feb 2026 11:24:13 -0800

Chemistry 222 Video Lecture from February 20, 2026.

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

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

Exam II Review Session Complete Lecture

mike.russell@mhchem.org — Wed, 18 Feb 2026 10:21:52 -0800

This video shows the Complete Lecture for the Exam II Review in CH 222.

CH 222: A Video Introduction to Midterm Exam II

Wed, 18 Feb 2026 10:21:48 -0800

This video offers a few tips and tricks on how to prepare for the second midterm exam in CH 222.

021826 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 18 Feb 2026 10:21:17 -0800

Chemistry 222 Video Lecture from February 18, 2026.

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

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

021626 Chemistry 222 Video Lecture

marsmars2@mac.com — Mon, 16 Feb 2026 10:38:34 -0800

Chemistry 222 Video Lecture from February 16, 2026.

This video covers material from Chapter 11 including osmosis, colloids, suspensions, and more. We also started an Exam Review for the upcoming second midterm exam.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

021326 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 13 Feb 2026 10:32:43 -0800

Chemistry 222 Video Lecture from February 13, 2026.

This video covers material from Chapter 11 including Raoul's law (vapor pressure lowering), boiling point elevation, freezing point lowering, molar mass using boiling point elevation and freezing point lowering, and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

Chapter 11 Complete Lecture - Part II

mike.russell@mhchem.org — Wed, 11 Feb 2026 10:31:26 -0800

This the Complete Lecture for Chapter 11. This episode is part 2 of 2 episodes.

Chapter 11 Complete Lecture - Part I

mike.russell@mhchem.org — Wed, 11 Feb 2026 10:31:29 -0800

This the Complete Lecture for Chapter 11. This episode is part 1 of 2 episodes.

Chapter 11 Screencast - Osmotic Pressure

Wed, 11 Feb 2026 10:31:32 -0800

A screencast from Chapter 11 in CH 222 entitled “Osmotic Pressure”

Chapter 11 Screencast - Boiling Point Elevation and Freezing Point Depression

Wed, 11 Feb 2026 10:31:35 -0800

A screencast from Chapter 11 in CH 222 entitled “Boiling Point Elevation and Freezing Point Depression”

Chapter 11 Screencast - Raoult's Law

Wed, 11 Feb 2026 10:31:38 -0800

A screencast from Chapter 11 in CH 222 entitled “Raoult's Law”

Chapter 11 Screencast - Colligative Concentration Units

Wed, 11 Feb 2026 10:31:41 -0800

A screencast from Chapter 11 in CH 222 entitled “Colligative Concentration Units”

Chapter 11 Screencast - Solubility and Solutions / Henry's Law

Wed, 11 Feb 2026 10:31:44 -0800

A screencast from Chapter 11 in CH 222 entitled “Solubility and Solutions / Henry's Law”

Chapter 11 Screencast - Solutions and Electrolytes

Wed, 11 Feb 2026 10:31:47 -0800

A screencast from Chapter 11 in CH 222 entitled “Solutions and Electrolytes”

CH 222: A Video Introduction to Chapter Guide Five

Wed, 11 Feb 2026 10:31:51 -0800

his is the video introduction to Chapter Guide Five for Chemistry 222.

021126 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 11 Feb 2026 10:30:40 -0800

Chemistry 222 Video Lecture from February 11, 2026.

This video covers material from Chapter 11 including gases in liquids (Henrys law), liquids in liquids, saturated and unsaturated, the colligative properties, mole fraction, mass percent, molality, molarity and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

020926 Chemistry 222 Video Lecture

marsmars2@mac.com — Mon, 09 Feb 2026 10:34:43 -0800

Chemistry 222 Video Lecture from February 9, 2026.

This video covers material from Chapter 10 and Chapter 11 including metallic unit cells, types of ion lattices, an overview of solubility and electrolytes, and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

020626 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 06 Feb 2026 10:32:05 -0800

Chemistry 222 Video Lecture from February 6, 2026.

This video covers material from Chapter 10 including transition phases, phase diagrams, triple point and critical point, solids, unit cells, differences between sc, bcc and fcc; and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

Chapter 10 Complete Lecture - Part II

mike.russell@mhchem.org — Wed, 04 Feb 2026 10:49:28 -0800

This the Complete Lecture for Chapter 10. This episode is part 2 of 2 episodes.

Chapter 10 Complete Lecture - Part I

mike.russell@mhchem.org — Wed, 04 Feb 2026 10:49:31 -0800

This the Complete Lecture for Chapter 10. This episode is part 1 of 2 episodes.

Chapter 10 Screencast - An Introduction to Solids and Unit Cells

Wed, 04 Feb 2026 10:49:34 -0800

A screencast from Chapter 10 in CH 222 entitled “An Introduction to Solids and Unit Cells”

Chapter 10 Screencast - Phase Diagrams

Wed, 04 Feb 2026 10:49:37 -0800

A screencast from Chapter 10 in CH 222 entitled “Phase Diagrams”

Chapter 10 Screencast - Phase Transitions

Wed, 04 Feb 2026 10:49:40 -0800

A screencast from Chapter 10 in CH 222 entitled “Phase Transitions”

Chapter 10 Screencast - Liquids and Vapor Pressure

Wed, 04 Feb 2026 10:49:43 -0800

A screencast from Chapter 10 in CH 222 entitled “Liquids and Vapor Pressure”

Chapter 10 Screencast - The Induced Dipole Force

Wed, 04 Feb 2026 10:49:46 -0800

A screencast from Chapter 10 in CH 222 entitled “The Induced Dipole Force”

Chapter 10 Screencast - Dipole-dipole and Hydrogen Bonds

Wed, 04 Feb 2026 10:49:49 -0800

A screencast from Chapter 10 in CH 222 entitled “Dipole-dipole and Hydrogen Bonds”

Chapter 10 Screencast - Introducing Intermolecular (IM) Forces

Wed, 04 Feb 2026 10:49:53 -0800

A screencast from Chapter 10 in CH 222 entitled “Introducing Intermolecular (IM) Forces”

CH 222: A Video Introduction to Chapter Guide Four

Wed, 04 Feb 2026 10:49:56 -0800

This is the video introduction to Chapter Guide Four for Chemistry 222.

020426 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 04 Feb 2026 10:46:25 -0800

Chemistry 222 Video Lecture from February 4, 2026.

This video covers material from Chapter 10 including xxxxxxx and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

020226 Chemistry 222 Video Lecture

marsmars2@mac.com — Mon, 02 Feb 2026 10:31:30 -0800

Chemistry 222 Video Lecture from February 2, 2026.

This video covers the third day of an exam review for the upcoming midterm exam I, and we also covered Chapter 10 including intra versus inter molecular forces, types of IM forces, ion-dipole force, dipole-dipole force, hydrogen bonding, and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

013026 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 30 Jan 2026 10:23:38 -0800

Chemistry 222 Video Lecture from January 30, 2026.

This video covers the second full day of an exam review for the upcoming midterm exam I.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

CH 222 Exam I Review Session Complete Lecture

mike.russell@mhchem.org — Wed, 28 Jan 2026 10:25:05 -0800

This video shows the Complete Lecture for the Exam I Review in CH 222.

CH 222: A Video Introduction to Midterm Exam I

Wed, 28 Jan 2026 10:25:02 -0800

This video offers a few tips and tricks on how to prepare for the first midterm exam in CH 222.

012826 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 28 Jan 2026 10:23:54 -0800

Chemistry 222 Video Lecture from January 28, 2026.

This video covers the first full day of an exam review for the upcoming midterm exam I.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

012626 Chemistry 222 Video Lecture

marsmars2@mac.com — Mon, 26 Jan 2026 10:42:02 -0800

Chemistry 222 Video Lecture from January 26, 2026.

This video covers material from Chapter 9 including an overview of Hess's Law and deltaH using heats of formation, the relationship between bond order, bond energy and bond length; bond enthalpies used to find delta H values, and more. We also started an exam review for the upcoming midterm exam I.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

012326 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 23 Jan 2026 10:20:43 -0800

Chemistry 222 Video Lecture from January 23, 2026.

This video covers material from Chapter 9 including enthalpy of formation values, Hess's Law, determining the enthalpy of a reaction using enthalpy of formation values (products - reactants), and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

Chapter 9 Complete Lecture Part II

mike.russell@mhchem.org — Wed, 21 Jan 2026 11:57:02 -0800

This the Complete Lecture for Chapter 9. This episode is part 2 of 2 episodes.

Chapter 9 Complete Lecture Part I

mike.russell@mhchem.org — Wed, 21 Jan 2026 11:57:05 -0800

This the Complete Lecture for Chapter 9. This episode is part 1 of 2 episodes.

Chapter 9 Screencast - The Strength of Ionic and Covalent Bonds

Wed, 21 Jan 2026 11:57:08 -0800

A screencast from Chapter 9 in CH 222 entitled “The Strength of Ionic and Covalent Bonds”

Chapter 9 Screencast - Using Heats of Formation

Wed, 21 Jan 2026 11:57:11 -0800

A screencast from Chapter 9 in CH 222 entitled “Using Heats of Formation”

Chapter 9 Screencast - Hess's Law

Wed, 21 Jan 2026 11:57:14 -0800

A screencast from Chapter 9 in CH 222 entitled “Hess's Law”

Chapter 9 Screencast - Enthalpy

Wed, 21 Jan 2026 11:57:17 -0800

A screencast from Chapter 9 in CH 222 entitled “Enthalpy”

Chapter 9 Screencast - Heat Capacity and Specific Heat Capacity

Wed, 21 Jan 2026 11:57:22 -0800

A screencast from Chapter 9 in CH 222 entitled “Heat Capacity and Specific Heat Capacity”

Chapter 9 Screencast - Units of Energy and Heat

Wed, 21 Jan 2026 11:57:25 -0800

A screencast from Chapter 9 in CH 222 entitled “Units of Energy and Heat”

Chapter 9 Screencast - An Introduction to Energy

Wed, 21 Jan 2026 11:57:29 -0800

A screencast from Chapter 9 in CH 222 entitled “An Introduction to Energy”

CH 222: A Video Introduction to Chapter Guide Three

Wed, 21 Jan 2026 11:57:32 -0800

This is the video introduction to Chapter Guide Three for Chemistry 222.

012126 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 21 Jan 2026 10:24:24 -0800

Chemistry 222 Video Lecture from January 21, 2026.

This video covers material from Chapter 9 including heat capacity, specific heat capacity (know 4.184 for liquid water!), q = mC(del)T, enthalpy, types and uses of enthalpy and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

011626 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 16 Jan 2026 10:17:50 -0800

Chemistry 222 Video Lecture from January 16, 2026.

This video covers material from Chapter 8 and Chapter 9 including the Kinetic Molecular Theory (KMT) for gases, the van der Waals equation, thermodynamics and kinetics, the first law of thermodynamics and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

Chapter 8 Complete Lecture - Part II

mike.russell@mhchem.org — Wed, 14 Jan 2026 10:14:41 -0800

This the Complete Lecture for Chapter 8. This episode is part 2 of 2 episodes.

Chapter 8 Complete Lecture - Part I

mike.russell@mhchem.org — Wed, 14 Jan 2026 10:14:44 -0800

This the Complete Lecture for Chapter 8. This episode is part 1 of 2 episodes.

Chapter 8 Screencast - Gases and the KMT

Wed, 14 Jan 2026 10:14:46 -0800

A screencast from Chapter 8 in CH 222 entitled “Gases and the KMT”

Chapter 8 Screencast - Diffusion and Effusion

Wed, 14 Jan 2026 10:14:49 -0800

A screencast from Chapter 8 in CH 222 entitled “Diffusion and Effusion”

Chapter 8 Screencast - Gas Stoichiometry

Wed, 14 Jan 2026 10:14:52 -0800

A screencast from Chapter 8 in CH 222 entitled “Gas Stoichiometry”

Chapter 8 Screencast - Dalton's Law

Wed, 14 Jan 2026 10:14:55 -0800

A screencast from Chapter 8 in CH 222 entitled “Dalton's Law”

Chapter 8 Screencast - The Ideal Gas Law

Wed, 14 Jan 2026 10:14:57 -0800

A screencast from Chapter 8 in CH 222 entitled “The Ideal Gas Law”

Chapter 8 Screencast - Modeling Gases (Boyle, Charles, etc.)

Wed, 14 Jan 2026 10:15:01 -0800

A screencast from Chapter 8 in CH 222 entitled “Modeling Gases (Boyle, Charles, etc.)”

Chapter 8 Screencast - Pressure

Wed, 14 Jan 2026 10:15:05 -0800

A screencast from Chapter 8 in CH 222 entitled “Pressure”

Chapter 8 Screencast - Three States of Matter

Wed, 14 Jan 2026 10:15:08 -0800

A screencast from Chapter 8 in CH 222 entitled “Three States of Matter”

CH 222: A Video Introduction to Chapter Guide Two

Wed, 14 Jan 2026 10:15:10 -0800

This is the video introduction to Chapter Guide Two for Chemistry 222.

011426 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 14 Jan 2026 10:13:38 -0800

Chemistry 222 Video Lecture from January 14, 2026.

This video covers material from Chapter 8 including the ideal gas law, PM = dRT, M = gRT/PV, Dalton's Law of Partial Pressures, effusion and diffusion and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

011226 Chemistry 222 Video Lecture

marsmars2@mac.com — Mon, 12 Jan 2026 10:28:03 -0800

Chemistry 222 Video Lecture from January 12, 2026.

This video covers material from Chapter 7 Part II and Chapter 8 including combustion analysis, gas pressure, types of gas laws, the gas constant and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

010926 Chemistry 222 Video Lecture

marsmars2@mac.com — Fri, 09 Jan 2026 10:33:33 -0800

Chemistry 222 Video Lecture from January 9, 2026.

This video covers material from Chapter 7 Part II including limiting reactants, excess reactant amount at the end, titration analysis, gravimetric analysis and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

Chapter 7b Complete Lecture - Part II

mike.russell@mhchem.org — Wed, 07 Jan 2026 10:25:36 -0800

This the Complete Lecture for Chapter 7b. This episode is part 2 of 2 episodes.

Chapter 7b Complete Lecture - Part I

mike.russell@mhchem.org — Wed, 07 Jan 2026 10:25:33 -0800

This the Complete Lecture for Chapter 7b. This episode is part 1 of 2 episodes.

Chapter 7b Screencast - Titration, Combustion and Gravimetric Analysis

Wed, 07 Jan 2026 10:25:30 -0800

A screencast from Chapter 7b in CH 222 entitled “Titration, Combustion and Gravimetric Analysis”

Chapter 7b Screencast - Limiting Reactants

Wed, 07 Jan 2026 10:25:27 -0800

A screencast from Chapter 7b in CH 222 entitled “Limiting Reactants”

Chapter 7b Screencast - Stoichiometry II

Wed, 07 Jan 2026 10:25:24 -0800

A screencast from Chapter 7b in CH 222 entitled “Stoichiometry II”

Chapter 7b Screencast - Stoichiometry I

Wed, 07 Jan 2026 10:25:20 -0800

A screencast from Chapter 7b in CH 222 entitled “Stoichiometry I”

010726 Chemistry 222 Video Lecture

marsmars2@mac.com — Wed, 07 Jan 2026 10:23:37 -0800

Chemistry 222 Video Lecture from January 7, 2026.

This video covers material from Chapter 7 Part II including stoichiometric coefficients, theoretical yield, actual yield, percent yield, limiting reactions, excess reactants, and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

010526 Chemistry 222 Video Lecture

marsmars2@mac.com — Mon, 05 Jan 2026 10:15:38 -0800

Chemistry 222 Video Lecture from January 5, 2026.

This video covers material from Chapter 7 Part II including a review of Chapter 7 Part I (from CH 221), stoichiometry, the importance of a balanced equation, the 'grams moles moles grams' dance, and more.

CH 222 website: https://mhchem.org/222

Let me know if you have any questions! Peace!

CH 222: A Video Introduction to Chapter Guide One

Mon, 22 Dec 2025 08:25:03 -0800

This is the video introduction to Chapter Guide One for Chemistry 222.

Getting Started in Chemistry with Dr. Russell! (Winter 2026 Version)

Mon, 22 Dec 2025 10:30:59 -0800

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. (Winter 2026 Version)

Website: https://mhchem.org

Let me know if you have any questions! Peace!

Finding AC 1303, AC 2501, AC 2507 and AC 2568 (Winter 2026 Version)

Mon, 22 Dec 2025 10:30:55 -0800

This video will help you find our three main chemistry classrooms (namely AC 1303, AC 2501 and AC 2507) as well as my office (AC 2568) at Mt. Hood Community College in Gresham, Oregon, USA. (Winter 2026 Version)

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 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.

Let me know if you have any questions! Peace!

Welcome to Chemistry 222!

Mon, 22 Dec 2025 08:19:46 -0800

Welcome to Chemistry 222 with Dr. Michael Russell!

120525 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 05 Dec 2025 10:20:24 -0800

Chemistry 221 L1 Video Lecture from December 5, 2025.

This video covers Day 3 of an Exam Review for the Final Lecture Exam. We also had two student presentations at the beginning of class.

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

Let me know if you have any questions! Peace!

CH 221 Final Exam Review - Complete Lecture

mike.russell@mhchem.org — Fri, 05 Dec 2025 10:20:44 -0800

This the CH 221 Final Exam Review Complete Lecture (Part 1 of 1 files.)

CH 221 - A Video Introduction to the Final Exams

Thu, 04 Dec 2025 11:53:05 -0800

This video offers a few tips and tricks on how to prepare for the lecture final exam and the lab final exam in CH 221.

120425 L2 Chemistry 221 Video Lecture Part 3

marsmars2@mac.com — Thu, 04 Dec 2025 11:52:29 -0800

Chemistry 221 L2 Video Lecture from December 4, 2025, Part 3 of 3.

This video covers Part III of an Exam Review for the Final Lecture Exam.

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

Let me know if you have any questions! Peace!

120425 L2 Chemistry 221 Video Lecture Part 2

marsmars2@mac.com — Thu, 04 Dec 2025 11:52:21 -0800

Chemistry 221 L2 Video Lecture from December 4, 2025, Part 2 of 3.

This video covers Part II of an Exam Review for the Final Lecture Exam.

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

Let me know if you have any questions! Peace!

120425 L2 Chemistry 221 Video Lecture Part 1

marsmars2@mac.com — Thu, 04 Dec 2025 11:41:58 -0800

Chemistry 221 L2 Video Lecture from December 4, 2025, Part 1 of 3.

This video covers Part I of an Exam Review for the Final Lecture Exam. We also had three student presentations at the beginning of the lecture.

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

Let me know if you have any questions! Peace!

120325 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 03 Dec 2025 10:18:56 -0800

Chemistry 221 L1 Video Lecture from December 3, 2025.

This video covers Day 2 of an Exam Review for the Final Lecture Exam.

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

Let me know if you have any questions! Peace!

120125 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 01 Dec 2025 10:18:53 -0800

Chemistry 221 L1 Video Lecture from December 1, 2025.

This video covers Day 1 of an Exam Review for the Final Lecture Exam.

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

Let me know if you have any questions! Peace!

112425 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 24 Nov 2025 10:15:00 -0800

Chemistry 221 L1 Video Lecture from November 24, 2025.

This video covers material from Chapter 7 Part I including a review of the three double displacement reaction types, combustion reactions, redox reactions, oxidation and reduction (and reducing agents and oxidizing agents), redox numbers and more.

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

Let me know if you have any questions! Peace!

112125 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 21 Nov 2025 10:29:40 -0800

Chemistry 221 L1 Video Lecture from November 21, 2025.

This video covers material from Chapter 7 Part I including the solubility table, exchange (double displacement) reactions, the precipitation reaction, the acid-base reaction, strong and weak acids and bases, the gas forming reaction, and more.

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

Let me know if you have any questions! Peace!

Chapter 7a Complete Lecture - Part II

mike.russell@mhchem.org — Thu, 20 Nov 2025 11:47:11 -0800

This the Complete Lecture for Chapter 7 Part II. This episode is part 2 of 2 episodes.

Chapter 7a Complete Lecture - Part I

mike.russell@mhchem.org — Thu, 20 Nov 2025 11:47:14 -0800

This the Complete Lecture for Chapter 7 Part I. This episode is part 1 of 2 episodes.

Chapter 7a Screencast - Redox Reactions

Thu, 20 Nov 2025 11:47:17 -0800

A screencast from Chapter 7a in CH 221 entitled “Redox Reactions”

Chapter 7a Screencast - Gas Forming and Combustion Reactions

Thu, 20 Nov 2025 11:47:20 -0800

A screencast from Chapter 7a in CH 221 entitled “Gas Forming and Combustion Reactions”

Chapter 7a Screencast - Acid Base Reactions

Thu, 20 Nov 2025 11:47:23 -0800

A screencast from Chapter 7a in CH 221 entitled “Acid Base Reactions”

Chapter 7a Screencast - Precipitation Reactions

Thu, 20 Nov 2025 11:47:26 -0800

A screencast from Chapter 7a in CH 221 entitled “Precipitation Reactions”

Chapter 7a Screencast - Aqueous Solutions and Solubility

Thu, 20 Nov 2025 11:47:29 -0800

A screencast from Chapter 7a in CH 221 entitled “Aqueous Solutions and Solubility”

Chapter 7a Screencast - Balancing Chemical Equations

Thu, 20 Nov 2025 11:47:32 -0800

A screencast from Chapter 7a in CH 221 entitled “Balancing Chemical Equations”

Chapter 6 Complete Lecture

Thu, 20 Nov 2025 11:47:35 -0800

This the Complete Lecture for Chapter 6. There is only one part for Chapter 6.

Chapter 6 Screencast - Other Concentration Units

Thu, 20 Nov 2025 11:47:38 -0800

A screencast from Chapter 6 in CH 221 entitled “Other Concentration Units”

Chapter 6 Screencast - Molarity

Thu, 20 Nov 2025 11:47:41 -0800

A screencast from Chapter 6 in CH 221 entitled “Molarity”

Chapter 6 Screencast - Molecular Formulas

Thu, 20 Nov 2025 11:47:44 -0800

A screencast from Chapter 6 in CH 221 entitled “Molecular Formulas”

Chapter 6 Screencast - Empirical Formulas

Thu, 20 Nov 2025 11:47:46 -0800

A screencast from Chapter 6 in CH 221 entitled “Empirical Formulas”

CH 221: A Video Introduction to Chapter Guide Six

Thu, 20 Nov 2025 11:47:50 -0800

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

112025 L2 Chemistry 221 Video Lecture Part 3

marsmars2@mac.com — Thu, 20 Nov 2025 11:45:39 -0800

Chemistry 221 L2 Video Lecture from November 20, 2025, Part 3 of 3.

This video covers Chapter 7 Part I (sections 7.1 - 7.2 only) including redox reactions, oxidation and reduction, reducing agent and oxidizing agent, single replacement reactions, oxidation numbers and more.

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

Let me know if you have any questions! Peace!

112025 L2 Chemistry 221 Video Lecture Part 2

marsmars2@mac.com — Thu, 20 Nov 2025 11:43:38 -0800

Chemistry 221 L2 Video Lecture from November 20, 2025, Part 2 of 3.

This video covers Chapter 7 Part I (sections 7.1 - 7.2 only) including solubility tables, exchange (double displacement) reactions, precipitation reactions, acid-base reactions, types of acids and bases, gas forming reactions, combustion reactions and more.

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

Let me know if you have any questions! Peace!

112025 L2 Chemistry 221 Video Lecture Part 1

marsmars2@mac.com — Thu, 20 Nov 2025 11:32:30 -0800

Chemistry 221 L2 Video Lecture from November 20, 2025, Part 1 of 3.

This video covers Chapter 7 Part I (sections 7.1 - 7.2 only) including the balanced chemical equation, states of matter in equations, stoichiometric coefficients, the law of conservation of mass, balancing equations, ionic chemicals in water, spectator ions, net ionic equations, and more.

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

Let me know if you have any questions! Peace!

111925 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 19 Nov 2025 10:49:43 -0800

Chemistry 221 L1 Video Lecture from November 19, 2025.

This video covers material from Chapter 7 Part I including aqueous ionic compounds, net ionic reactions, spectator ions, solubility tables (and how to use one), and more.

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

Let me know if you have any questions! Peace!

111725 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 17 Nov 2025 10:20:38 -0800

Chemistry 221 L1 Video Lecture from November 17, 2025.

This video covers material from Chapter 7 Part I including the balanced chemical equation, states of matter in equations, stoichiometric coefficients, the law of conservation of mass, balancing equations, ionic chemicals in water, and more.

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

Let me know if you have any questions! Peace!

111425 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 14 Nov 2025 10:22:13 -0800

Chemistry 221 L1 Video Lecture from November 14, 2025.

This video covers material from Chapter 6 including molarity, preparing a solution through measurement of a solid and dilution, the dilution equation, mass and volume percentages, parts per million, and more.

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

Let me know if you have any questions! Peace!

CH 221 - A Video Introduction to the Class Presentations

Wed, 12 Nov 2025 10:50:59 -0800

This video offers a few tips and tricks on how to prepare for the Class Presentations in CH 221.

111225 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 12 Nov 2025 10:50:32 -0800

Chemistry 221 L1 Video Lecture from November 12, 2025.

This video covers material from Chapter 6 including empirical formula, molecular formula, finding an empirical (and molecular) formula from combustion, concentration, molarity, and more.

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

Let me know if you have any questions! Peace!

111025 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 10 Nov 2025 10:16:19 -0800

Chemistry 221 L1 Video Lecture from November 10, 2025.

This video covers material from Chapter 6 including formula mass and molar mass, how chemists find a molecular formula, percent composition, empirical formulas, using molar mass to convert empirical formulas to molecular formulas, and more.

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

Let me know if you have any questions! Peace!

110725 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 07 Nov 2025 10:19:25 -0800

Chemistry 221 L1 Video Lecture from November 7, 2025.

This video covers Day 3 of an Exam Review for the Midterm Exam II.

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

Let me know if you have any questions! Peace!

Exam II Review Session Complete Lecture

mike.russell@mhchem.org — Fri, 07 Nov 2025 08:02:09 -0800

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

CH 221 - A Video Introduction to Midterm Exam II

Thu, 06 Nov 2025 12:56:51 -0800

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

110625 L2 Chemistry 221 Video Lecture Part 4

marsmars2@mac.com — Thu, 06 Nov 2025 12:55:02 -0800

Chemistry 221 L2 Video Lecture from November 6, 2025, Part 4 of 4.

This video covers material from Chapter 6 including solutions, morality, creating a solution from mass of solute, creating a solution using a concentrated solution (C1V1 = C2V2), other concentration types, and more.

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

Let me know if you have any questions! Peace!

110625 L2 Chemistry 221 Video Lecture Part 3

marsmars2@mac.com — Thu, 06 Nov 2025 12:55:15 -0800

Chemistry 221 L2 Video Lecture from November 6, 2025, Part 3 of 4.

This video covers material from Chapter 6 including finding an empirical formula, the difference between an empirical formula and a molecular formula, finding a molecular formula using an empirical formula and the molar mass, and more.

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

Let me know if you have any questions! Peace!

110625 L2 Chemistry 221 Video Lecture Part 2

marsmars2@mac.com — Thu, 06 Nov 2025 12:46:14 -0800

Chemistry 221 L2 Video Lecture from November 6, 2025, Part 2 of 4.

This video covers Part II of an Exam Review for the upcoming Midterm Exam II. This lecture also started the material for Chapter 6 including finding a formula in chemistry, methods for finding an empirical formula, and more.

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

Let me know if you have any questions! Peace!

110625 L2 Chemistry 221 Video Lecture Part 1

marsmars2@mac.com — Thu, 06 Nov 2025 12:41:04 -0800

Chemistry 221 L2 Video Lecture from November 6, 2025, Part 1 of 4.

This video covers Part I of an Exam Review for the upcoming Midterm Exam II.

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

Let me know if you have any questions! Peace!

110525 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 05 Nov 2025 10:32:40 -0800

Chemistry 221 L1 Video Lecture from November 5, 2025.

This video covers Day 2 of an Exam Review for the Midterm Exam II.

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

Let me know if you have any questions! Peace!

110325 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 03 Nov 2025 10:31:00 -0800

Chemistry 221 L1 Video Lecture from November 3, 2025.

This video covers Day 1 of an Exam Review for the Midterm Exam II.

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

Let me know if you have any questions! Peace!

103125 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 31 Oct 2025 10:23:46 -0700

Chemistry 221 L1 Video Lecture from October 31, 2025.

This video covers material from Chapter 5 including building a molecular orbital diagram, bond order, bond order with respect to Lewis structures, magnetism, making ions in MO diagrams, shorthand notation, and more.

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

Let me know if you have any questions! Peace!

Chapter 5 Complete Lecture - Part 2 of 2

mike.russell@mhchem.org — Thu, 30 Oct 2025 11:19:54 -0700

This the Complete Lecture for Chapter 5. This episode is part 2 of 2 episodes.

Chapter 5 Complete Lecture - Part I of 2

mike.russell@mhchem.org — Thu, 30 Oct 2025 11:19:57 -0700

This the Complete Lecture for Chapter 5. This episode is part 1 of 2 episodes.

Chapter 5 Screencast - Paramagnetism and Ions in MO Theory

Thu, 30 Oct 2025 11:20:00 -0700

A screencast from Chapter 5 in CH 221 entitled “Paramagnetism and Ions in MO Theory”

Chapter 5 Screencast - More MO Diagrams (pi bonds)

Thu, 30 Oct 2025 11:20:03 -0700

A screencast from Chapter 5 in CH 221 entitled “More MO Diagrams (pi bonds)”

Chapter 5 Screencast - MO Diagrams and Bond Order

Thu, 30 Oct 2025 11:20:06 -0700

A screencast from Chapter 5 in CH 221 entitled “MO Diagrams and Bond Order”

Chapter 5 Screencast - An Introduction to Molecular Orbital Theory

Thu, 30 Oct 2025 11:20:09 -0700

A screencast from Chapter 5 in CH 221 entitled “An Introduction to Molecular Orbital Theory”

Chapter 5 Screencast - Multiple Bonds in VB Theory

Thu, 30 Oct 2025 11:20:12 -0700

A screencast from Chapter 5 in CH 221 entitled “Multiple Bonds in VB Theory”

Chapter 5 Screencast - Valence Bond Theory (CH4)

Thu, 30 Oct 2025 11:20:15 -0700

A screencast from Chapter 5 in CH 221 entitled “Chapter 5 Screencast - Valence Bond Theory (CH4)”

Chapter 5 Screencast - Valence Bond Theory (BF3)

Thu, 30 Oct 2025 11:20:19 -0700

A screencast from Chapter 5 in CH 221 entitled “Chapter 5 Screencast - Valence Bond Theory (BF3)”

Chapter 5 Screencast - Valence Bond and Molecular Orbital Theory

Thu, 30 Oct 2025 11:20:22 -0700

A screencast from Chapter 5 in CH 221 entitled “Valence Bond and Molecular Orbital Theory”

CH 221: A Video Introduction to Chapter Guide Five

Thu, 30 Oct 2025 11:20:26 -0700

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

103025 L2 Chemistry 221 Video Lecture Part 3

marsmars2@mac.com — Thu, 30 Oct 2025 11:18:42 -0700

Chemistry 221 L2 Video Lecture from October 30, 2025, Part 3 of 3.

This video covers material from Chapter 5 including magnetism in molecular orbital (MO) theory, short hand notation in MO theory, determining the number of sigma and pi bonds in MO theory and more.

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

Let me know if you have any questions! Peace!

103025 L2 Chemistry 221 Video Lecture Part 2

marsmars2@mac.com — Thu, 30 Oct 2025 11:15:37 -0700

Chemistry 221 L2 Video Lecture from October 30, 2025, Part 2 of 3.

This video covers material from Chapter 5 including an introduction to molecular orbital theory, bonding and antibonding orbitals, the four principles of MO theory, bond order in MO Theory and in Lewis Structures, and more.

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

Let me know if you have any questions! Peace!

103025 L2 Chemistry 221 Video Lecture Part 1

marsmars2@mac.com — Thu, 30 Oct 2025 11:06:59 -0700

Chemistry 221 L2 Video Lecture from October 30, 2025, Part 1 of 3.

This video covers material from Chapter 5 including an introduction to valence bond theory, orbital hybridization, sigma and pi bonds, the nature of a pi bond, hindered rotation around double bonds (relative to sigma bonds), and more.

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

Let me know if you have any questions! Peace!

102925 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 29 Oct 2025 10:13:43 -0700

Chemistry 221 L1 Video Lecture from October 29, 2025.

This video covers material from Chapter 5 including valence bond theory (sp3 hybridization), the origin of double and triple bonds (pi bonds), molecular orbital theory, and more.

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

Let me know if you have any questions! Peace!

102725 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 27 Oct 2025 10:29:33 -0700

Chemistry 221 L1 Video Lecture from October 27, 2025.

This video covers material from Chapter 4 and Chapter 5 including molecular polarity, VSEPR, Valence Bond Theory (VB) and more.

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

Let me know if you have any questions! Peace!

102425 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 24 Oct 2025 10:44:55 -0700

Chemistry 221 L1 Video Lecture from October 24, 2025.

This video covers material from Chapter 4 including violations of the octet rule, paramagnetic compounds, formal charges, VSEPR, and more.

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

Let me know if you have any questions! Peace!

102325 L2 Chemistry 221 Video Lecture Part 3

marsmars2@mac.com — Thu, 23 Oct 2025 12:01:29 -0700

Chemistry 221 L2 Video Lecture from October 23, 2025, Part 3 of 3.

This video covers material from Chapter 4 including VSEPR with trigonal bipyramid and octahedral structures, molecular polarity, how to determine if a molecule is polar or nonpolar and more.

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

Let me know if you have any questions! Peace!

102325 L2 Chemistry 221 Video Lecture Part 2

marsmars2@mac.com — Thu, 23 Oct 2025 11:56:59 -0700

Chemistry 221 L2 Video Lecture from October 23, 2025, Part 2 of 3.

This video covers material from Chapter 4 including multiple (double and triple) bonds, exceptions to the octet rule, paramagnetic molecules, VSEPR and more.

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

Let me know if you have any questions! Peace!

102325 L2 Chemistry 221 Video Lecture Part 1

marsmars2@mac.com — Thu, 23 Oct 2025 11:44:56 -0700

Chemistry 221 L2 Video Lecture from October 23, 2025, Part 1 of 3.

This video covers material from Chapter 4 including ionic and covalent bonding, Coulomb's Law, the Lewis structure, electronegativity, valence and core electrons, bonding and lone pairs, and more.

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

Let me know if you have any questions! Peace!

102225 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 22 Oct 2025 10:37:36 -0700

Chemistry 221 L1 Video Lecture from October 22, 2025.

This video covers material from Chapter 4 including polar versus nonpolar bonds, electronegativity, valence electrons, the Lewis structure, building a Lewis structure, and more.

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

Let me know if you have any questions! Peace!

102025 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 20 Oct 2025 10:44:03 -0700

Chemistry 221 L1 Video Lecture from October 20, 2025.

This video covers day 3 of an exam review for the upcoming Midterm Exam I.

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

Let me know if you have any questions! Peace!

101725 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 17 Oct 2025 10:34:25 -0700

Chemistry 221 L1 Video Lecture from October 17, 2025.

This video covers day 2 of an exam review for the upcoming Midterm Exam I.

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

Let me know if you have any questions! Peace!

Exam I Review Session Complete Lecture

mike.russell@mhchem.org — Thu, 16 Oct 2025 12:29:48 -0700

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

CH 221 - A Video Introduction to Midterm Exam I

Thu, 16 Oct 2025 12:29:43 -0700

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

101625 L2 Chemistry 221 Video Lecture Part 3

marsmars2@mac.com — Thu, 16 Oct 2025 12:28:50 -0700

Chemistry 221 L2 Video Lecture from October 16, 2025, Part 3 of 3.

This video covers Part 3 of an exam review for the upcoming Midterm Exam I.

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

Let me know if you have any questions! Peace!

101625 L2 Chemistry 221 Video Lecture Part 2

marsmars2@mac.com — Thu, 16 Oct 2025 12:17:36 -0700

Chemistry 221 L2 Video Lecture from October 16, 2025, Part 2 of 3.

This video covers Part 2 of an exam review for the upcoming Midterm Exam I.

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

Let me know if you have any questions! Peace!

101625 L2 Chemistry 221 Video Lecture Part 1

marsmars2@mac.com — Thu, 16 Oct 2025 12:07:29 -0700

Chemistry 221 L2 Video Lecture from October 16, 2025, Part 1 of 3.

This video covers Part 1 of an exam review for the upcoming Midterm Exam I.

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

Let me know if you have any questions! Peace!

101525 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 15 Oct 2025 10:53:33 -0700

Chemistry 221 L1 Video Lecture from October 15, 2025.

This video covers day 1 of an exam review for the upcoming Midterm Exam I.

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

Let me know if you have any questions! Peace!

101325 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Mon, 13 Oct 2025 10:18:04 -0700

Chemistry 221 L1 Video Lecture from October 13, 2025.

This video covers material from Chapter 3 including the nomenclature of ionic compounds, the nomenclature of covalent compounds, variable charge metals, Roman numbers, Greek prefixes, polyatomic ions, acid and bases, and more.

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

Let me know if you have any questions! Peace!

101025 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Fri, 10 Oct 2025 10:23:01 -0700

Chemistry 221 L1 Video Lecture from October 10, 2025.

This video covers material from Chapter 3 including electron configurations for neutral atoms and ions (cations and anions), periodic trends (for size, ionization energy and electron affinity), and more.

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

Let me know if you have any questions! Peace!

Chapter 3 Complete Lecture Part II

mike.russell@mhchem.org — Thu, 09 Oct 2025 14:16:13 -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, 09 Oct 2025 14:16:21 -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, 09 Oct 2025 14:16:25 -0700

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

Chapter 3 Screencast - Naming Ionic Compounds / Polyatomic Ions

Thu, 09 Oct 2025 14:16:28 -0700

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

Chapter 3 Screencast - Periodic Trends

Thu, 09 Oct 2025 14:16:32 -0700

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

Chapter 3 Screencast - Atomic Electron Configurations

Thu, 09 Oct 2025 14:16:35 -0700

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

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

Thu, 09 Oct 2025 14:16:39 -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, 09 Oct 2025 14:16:42 -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, 09 Oct 2025 14:16:45 -0700

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

Chapter 3 Screencast - de Broglie and Heisenberg

Thu, 09 Oct 2025 14:16:48 -0700

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

Chapter 3 Screencast - The Bohr Model

Thu, 09 Oct 2025 14:16:52 -0700

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

Chapter 3 Screencast - Photoelectric Effect / nm to kJ Conversions

Thu, 09 Oct 2025 14:16:55 -0700

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

Chapter 3 Screencast - Planck's Constant

Thu, 09 Oct 2025 14:16:58 -0700

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

Chapter 3 Screencast - Waves and Frequencies for Electromagnetic Radiation

Thu, 09 Oct 2025 14:17:01 -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, 09 Oct 2025 14:17:04 -0700

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

100925 L2 Chemistry 221 Video Lecture Part 4

marsmars2@mac.com — Thu, 09 Oct 2025 13:20:18 -0700

Chemistry 221 L2 Video Lecture from October 9, 2025, Part 4 of 4.

This video covers material from Chapter 3 including ionic compounds with variable charge metals, covalent compounds (Greek prefixes), acids, bases hydrated compounds, and more.

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

Let me know if you have any questions! Peace!

100925 L2 Chemistry 221 Video Lecture Part 3

marsmars2@mac.com — Thu, 09 Oct 2025 13:14:43 -0700

Chemistry 221 L2 Video Lecture from October 9, 2025, Part 3 of 4.

This video covers material from Chapter 3 including periodic properties using the periodic table, ionic versus covalent bonding, fixed charges on metals and non metals, variable charge metals, creating ionic compounds (and naming them), and more.

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

Let me know if you have any questions! Peace!

100925 L2 Chemistry 221 Video Lecture Part 2

marsmars2@mac.com — Thu, 09 Oct 2025 13:05:08 -0700

Chemistry 221 L2 Video Lecture from October 9, 2025, Part 2 of 4.

This video covers material from Chapter 3 including an overview of quantum numbers, the Pauli Exclusion principle, the Aufbau diagram, the n+l rule, placing electrons in atoms, electron configurations of ions, and more.

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

Let me know if you have any questions! Peace!

100925 L2 Chemistry 221 Video Lecture Part 1

marsmars2@mac.com — Thu, 09 Oct 2025 12:51:01 -0700

Chemistry 221 L2 Video Lecture from October 9, 2025, Part 1 of 4.

This video covers material from Chapter 3 including an overview the de Broglie equation, the Heisenberg uncertainty principle, Schrödinger's equations, the four quantum numbers and more.

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

Let me know if you have any questions! Peace!

100825 L1 Chemistry 221 Video Lecture

marsmars2@mac.com — Wed, 08 Oct 2025 10:20:14 -0700

Chemistry 221 L1 Video Lecture from October 8, 2025.

This video covers material from Chapter 3 including an overview of the four quantum numbers, nl notation, the Pauli exclusion principle, Aufbau diagrams, and more.

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

Let me know if you have any questions! Peace!

100625 L1 Chemistry 221 Video Lecture

mike.russell@mhchem.org — Mon, 06 Oct 2025 10:31:30 -0700

Chemistry 221 L1 Video Lecture from October 6, 2025.

This video covers material from Chapter 3 including converting from nm to kJ (and back again), the Bohr model of the atom, sharp line spectra, the de Broglie equation, the quantum numbers, and more.

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

Let me know if you have any questions! Peace!

100325 L1 Chemistry 221 Video Lecture

mike.russell@mhchem.org — Fri, 03 Oct 2025 10:21:35 -0700

Chemistry 221 L1 Video Lecture from October 3, 2025.

This video covers material from Chapter 2 and Chapter 3 including the molar mass of compounds, light and electromagnetic radiation, frequency, wavelength, the speed of light, Planck's constant, and more.

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

Let me know if you have any questions! Peace!

Chapter 2 Complete Lecture Part II

mike.russell@mhchem.org — Sat, 04 Oct 2025 10:09:31 -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 — Sat, 04 Oct 2025 10:09:34 -0700

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

Chapter 2 Screencast - The Mole and Molar Mass

Sat, 04 Oct 2025 10:09:37 -0700

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

Chapter 2 Screencast - Empirical Formulas and Isomers

Sat, 04 Oct 2025 10:09:39 -0700

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

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

Sat, 04 Oct 2025 10:09:44 -0700

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

Chapter 2 Screencast - Atomic Mass

Sat, 04 Oct 2025 10:09:47 -0700

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

Chapter 2 Screencast - Atomic Number and Isotopes

Sat, 04 Oct 2025 10:09:50 -0700

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

Chapter 2 Screencast - The Modern Atom

Sat, 04 Oct 2025 10:09:54 -0700

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

Chapter 2 Screencast - Democritius and Dalton

Sat, 04 Oct 2025 10:09:58 -0700

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

CH 221: An Video Introduction to Chapter Guide Two

Sat, 04 Oct 2025 10:10:01 -0700

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

100225 L2 Chemistry 221 Video Lecture Part 4

mike.russell@mhchem.org — Thu, 02 Oct 2025 15:45:28 -0700

Chemistry 221 L2 Video Lecture from October 2, 2025, Part 4 of 4.

This video covers material from Chapter 3 including the Bohr model for the atom, sharp line spectra, absorbance and emission, calculating the wavelength and frequency from a change in energy, and more.

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

Let me know if you have any questions! Peace!

100225 L2 Chemistry 221 Video Lecture Part 3

mike.russell@mhchem.org — Thu, 02 Oct 2025 15:45:21 -0700

Chemistry 221 L2 Video Lecture from October 2, 2025, Part 3 of 4.

This video covers material from Chapter 3 including a discussion of light, electromagnetic radiation, frequency and wavelength, the speed of light and Planck's constant and more.

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

Let me know if you have any questions! Peace!

100225 L2 Chemistry 221 Video Lecture Part 2

mike.russell@mhchem.org — Thu, 02 Oct 2025 12:52:09 -0700

Chemistry 221 L2 Video Lecture from October 2, 2025, Part 2 of 4.

This video covers material from Chapter 2 including a discussion of the mole and Avogadro's number, the importance of the atomic mass number with relationship to molar mass, calculating the molar mass of a compound, and more.

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

Let me know if you have any questions! Peace!

100225 L2 Chemistry 221 Video Lecture Part 1

mike.russell@mhchem.org — Thu, 02 Oct 2025 12:46:59 -0700

Chemistry 221 L2 Video Lecture from October 2, 2025, Part 1 of 4.

This video covers material from Chapter 2 including an overview of the atom, protons, neutrons, electrons, the atomic number, the mass number, isotopes, atomic mass, and more.

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

Let me know if you have any questions! Peace!

100125 L1 Chemistry 221 Video Lecture

mike.russell@mhchem.org — Wed, 01 Oct 2025 10:17:40 -0700

Chemistry 221 L1 Video Lecture from October 1, 2025.

This video covers material from Chapter 2 including the importance of atomic mass, how atomic mass is calculated, the 7 diatomics, molecular formulas and empirical formulas, the mole, Avogadro's number, and more.

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

Let me know if you have any questions! Peace!

092925 L1 Chemistry 221 Video Lecture

mike.russell@mhchem.org — Mon, 29 Sep 2025 10:34:18 -0700

Chemistry 221 L1 Video Lecture from September 29, 2025.

This video covers material from Chapter 2 including the composition of the atom (protons, neutrons and electrons), the atomic number, the Rutherford Gold Foil experiment, atomic mass, and more.

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

Let me know if you have any questions! Peace!

092625 L1 Chemistry 221 Video Lecture

mike.russell@mhchem.org — Fri, 26 Sep 2025 10:35:46 -0700

Chemistry 221 L1 Video Lecture from September 26, 2025.

This video covers material from Chapter 1 (and a small bit from Chapter 2) including measurements in chemistry, precision and accuracy significant figures, rounding of numbers, mass percentages, and more.

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

Let me know if you have any questions! Peace!

092525 L2 Chemistry 221 Video Lecture Part 3

mike.russell@mhchem.org — Thu, 25 Sep 2025 13:47:39 -0700

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

This video covers material from Chapter 1 including measurements in chemistry, precision and accuracy significant figures, rounding of numbers, mass percentages, and more.

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

Let me know if you have any questions! Peace!

092525 L2 Chemistry 221 Video Lecture Part 2

mike.russell@mhchem.org — Thu, 25 Sep 2025 13:47:20 -0700

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!

092525 L2 Chemistry 221 Video Lecture Part 1

mike.russell@mhchem.org — Thu, 25 Sep 2025 13:02:36 -0700

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!

092425 L1 Chemistry 221 Video Lecture

mike.russell@mhchem.org — Wed, 24 Sep 2025 10:17:34 -0700

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!

092225 L1 Chemistry 221 Video Lecture

mike.russell@mhchem.org — Mon, 22 Sep 2025 10:23:15 -0700

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!

Chapter 1 Complete Lecture Part II

mike.russell@mhchem.org — Wed, 23 Jul 2025 10:47:39 -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 — Tue, 22 Jul 2025 20:38:32 -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

Tue, 22 Jul 2025 20:37:33 -0700

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

Chapter 1 Screencast - Significant Figures (Sig figs)

Tue, 22 Jul 2025 20:36:25 -0700

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

Chapter 1 Screencast - Precision and Accuracy

Tue, 22 Jul 2025 20:35:24 -0700

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

Chapter 1 Screencast - Density

Tue, 22 Jul 2025 20:31:39 -0700

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

Chapter 1 Screencast - Temperature and Volume

Tue, 22 Jul 2025 20:30:22 -0700

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

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

Tue, 22 Jul 2025 20:27:37 -0700

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

Chapter 1 Screencast - The Periodic Table

Tue, 22 Jul 2025 20:24:48 -0700

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

Chapter 1 Screencast - Mixtures, Elements and Compounds

Tue, 22 Jul 2025 20:24:58 -0700

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

Chapter 1 Screencast - Phases, Mass and Weight

Tue, 22 Jul 2025 20:25:06 -0700

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

Chapter 1 Screencast - Domains of Chemistry

Tue, 22 Jul 2025 20:25:16 -0700

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

Chapter 1 Screencast - What is Chemistry?

Tue, 22 Jul 2025 20:25:23 -0700

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

CH 221: A Video Introduction to Chapter Guide One

Tue, 22 Jul 2025 20:10:24 -0700

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

Welcome to Chemistry 221!

Wed, 23 Jul 2025 11:21:03 -0700

Welcome to Chemistry 221 with Dr. Michael Russell!