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

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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

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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

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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!

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!

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

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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

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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

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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!