General chemistry calls for a fuller understanding of the nature of the various processes that take place with substances. Understanding the essence of quantitative laws of chemistry, stoichiometric relations, chemical bonds, thermodynamics, reaction rate and equilibrium processes is the basis for further in-depth study of chemical disciplines. Seeing the relationships between the quantitative composition of solutions and its colligative properties, as well as between acid and base equilibria and oxidation-reduction processes, allows to predict and explain the properties and other transformations of various new materials. For example, the corrosion resistance of metals.