A podcast supporting the chemistry students of Dr. Michael Russell at Mt. Hood Community College in Gresham, Oregon, USA.
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
A screencast from Chapter 6 in CH 221 entitled “Empirical Formulas”
A screencast from Chapter 6 in CH 221 entitled “Molecular Formulas”
A screencast from Chapter 6 in CH 221 entitled “Molarity”
A screencast from Chapter 7a in CH 221 entitled “Balancing Chemical Equations”
A screencast from Chapter 7a in CH 221 entitled “Aqueous Solutions and Solubility”
A screencast from Chapter 7a in CH 221 entitled “Precipitation Reactions”
A screencast from Chapter 7a in CH 221 entitled “Acid Base Reactions”
A screencast from Chapter 7a in CH 221 entitled “Gas Forming and Combustion Reactions”
This the Complete Lecture for Chapter 7 Part I. This episode is part 1 of 2 episodes.
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
A screencast from Chapter 5 in CH 221 entitled “Valence Bond and Molecular Orbital Theory”
A screencast from Chapter 5 in CH 221 entitled “Chapter 5 Screencast - Valence Bond Theory (BF3)”
A screencast from Chapter 5 in CH 221 entitled “Chapter 5 Screencast - Valence Bond Theory (CH4)”
A screencast from Chapter 5 in CH 221 entitled “Multiple Bonds in VB Theory”
A screencast from Chapter 5 in CH 221 entitled “An Introduction to Molecular Orbital Theory”
A screencast from Chapter 5 in CH 221 entitled “MO Diagrams and Bond Order”
A screencast from Chapter 5 in CH 221 entitled “Paramagnetism and Ions in MO Theory”
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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: http://mhchem.org/221 Let me know if you have any questions! Peace!
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