As a teacher of physical chemistry, I noticed that students, even in advanced classes, have difficulties in understanding the basics of redox chemistry. In this Section 1, I attempted to summarize some fundamental principles of chemistry often found later in redox processes. Students have often difficulties in linking CHEMISTRY to REDOX CHEMISTRY (or ELECTROCHEMISTRY), thinking that both are separate from each other. Chemistry concepts, such as solvents, electrolytes, ionic conductivity, acidity, alkalinity (basicity), pH, as well as some thermodynamics and kinetics basics are all concepts that could be found in redox chemistry. To further clarify the discussed concepts, numerous questions and problems with detailed answers are provided. Most of these questions are formulated by students like you. I believe that this Section 1 will greatly help students with levels varying from high school to advanced university classes.