This manuscript represents the culmination of five years of teaching experience in the Technical Science Department at the University of Mohamed Boudiaf in M'sila. This document is primarily composed of course and application exercises, has been designed for first-year students enrolled in the renewable energies programs. This manuscript is in accordance with the recently revised curriculum for the course entitled "Elements of Chemistry," as established by the Pedagogical Committee of the Science and Technology Domain (CPND-ST). It is presented in the form of six chapters, which are respectively named as follows:

1. Fundamentals

2. Main Constituents of Matter

3. Radioactivity

4. Electronic Structure of the Atom

5. Periodic Classification of Chemical Elements

6. Chemical Bonds.