The book subject is General Chemistry which is concerned with the study of basic concepts that must be mastered for those who wanted to take advantage of this science. In this book, all the basics that the reader needs are closely related to each other, in order to know and write chemical reactions, make the necessary calculations in a precise way, and to know what is produced, knowing the conditions associated with the reaction, which may increase or limit its speed. So, I covered all the topics that the student needs at the beginning of his university studies, in twenty-one chapters, including the following topics: matter, measurement and chemical calculations, the definition of atoms, molecules and ions, chemical reactions and rate measurements, electronic configuration in atoms and chemical bonds and molecular structure; periodic arrangements of elements; mentioning the element states: gaseous, liquid and solid, thermochemistry and spontaneity of reactions, chemical equilibrium, acid and base reactions, precipitation reactions, kinetics and nuclear reactions, oxidation-reduction reactions, its association with electrochemistry, the study of the properties of metals and the coordination complexes, and finally the foundations of organic chemistry