I finished up a brief section on the alkali group of elements, which may have been a little ahead of where I want to go with them. I will be continuing with expanding other groups of elements; the main block group, the transition metal group, and the inner transition metal group.
Within chemical thermodynamics, I have started an outline of thermochemistry. This includes dealing with four major quantities of interest; enthalpy, entropy, Helmholtz Free Energy, and Gibbs free energy. The third of these is little discussed in most introductory chemistry texts, but since it was mentioned in one of mine, I include it for the sake of completeness.
In Astronomy, I am taking a closer look at the terrestrial planets; Mercury, Venus, the Earth, and Mars.
In geology, I have finally fihished a section on interior geology, which wraps up the section for now.