Единство процессов составления и решения задач на коэффициент растворимости

One of the interrelated approaches to learning which are considered in the publication is the unity of tasks formulation and solution. Inverse tasks formulation and solution are simple and useful criteria of students’ creative thinking development – “it always leads a student to the new problems statement” (P.M.Erdniev). A consolidated didactic unit is consistent and holistic, stable to time conservation and quick emergence in memory. A CDU gets a special actuality in the conditions of Federal State Educational Standard introduction. Principles of Technology of Consolidation didactic units contribute to forming of universal training activities, key interdisciplinary competences, growth of educational and informative possibilities of students. The matrix circulation allows to model conditions and to determine an unknown question for inverse tasks (B.P.Erdniev). A number of inverse tasks mostly depends on a number of direct task physical parameters. As opposed to the conditions of the problem, common entry a lowercase entry inserted into a matrix is suggested. An essential requirement of inverse tasks solution is a task text formulation. A combination of direct and inverse tasks leads to consistency of chemistry knowledge. The main feature of consolidation assimilation unit is to create conditions for understanding of connections and junctions between among components of unified knowledge. For the state final examination in chemistry on general secondary education in 2022 a perspective Unified state examination model in chemistry is offered for social and professional discussion. Some changes both in the structure and in the content of the exam paper are offered. For example, an estimated task 24, part 1 of the exam paper, about solubility of salts, namely deposition of salt during cooling of the saturated solution at the set temperature. Information about solubility of salts at different temperatures is given in a table.