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Sunitha and Ifadha reviewed atomic structure, isotopes, and emission spectra, including electron arrangement and ionization energy. Ifadha learned a method for writing electronic configurations using SPDF notation and how it relates to the periodic table. Sunitha assigned practice problems up to element 21 and will cover the D block in the next session.

During their chemistry lesson, Sunitha and Ifadha delved into stoichiometry, limiting reagents, and analytical techniques such as colorimetry and UV-visible spectroscopy. Ifadha honed her skills by practicing calculations and identifying concentrations using calibration curves. They also discussed atomic emission and absorption spectroscopy and their applications, and plan to review the chapter further in their upcoming lesson.

Sunitha and a student reviewed redox reactions and delved into quantitative analysis, focusing on gravimetric analysis and stoichiometry. The student, who attends the University of Illinois Chicago, practiced calculating mole ratios and determining the mass of salts in solutions using precipitation reactions. They also discussed limiting and excess reactants, and Sunitha assigned practice problems on gravimetric analysis for the next lesson.

Sunitha and Ifadha had a comprehensive chemistry lesson, where they explored chemical contaminants and salts found in water. They thoroughly discussed their sources, potential health effects, and various methods for sampling and analysis. Specific topics included heavy metals, the process of bioaccumulation, the characteristics of hard water, and techniques for salinity testing. Their next lesson is planned to focus on the analytical techniques used to quantify these substances, incorporating calculations based on mole concepts.

Sunitha provided comprehensive chemistry instruction on complex redox reactions with transition metals. The lesson covered balancing half equations and full redox equations. The learner, who resides in The Bronx, then delved into the reactivity series of metals, displacement reactions, and predicting reaction outcomes. They practiced writing balanced equations and discussed further problem-solving practice.

Sunitha provided comprehensive chemistry instruction to a student from Southwestern College in Chula Vista across two lessons. The initial lesson delved into acids and bases, covering reactions, pH, acid strength and concentration, interactions with metal compounds, conjugate pairs, and real-world applications. The subsequent lesson focused on redox reactions, emphasizing balancing equations, identifying oxidation/reduction through electron transfer, writing half-equations, pinpointing oxidizing and reducing agents, and constructing overall balanced equations. Both lessons incorporated practice problems and examples to solidify the learner's understanding.