DEMONSTRATIVE, LABORATORY AND RESEARCH EXPERIMENT ON THE REACTIONS OF METAL REDUCTION FROM SOLUTIONS IN CHEMISTRY COURSE IN THE SECONDARY SCHOOL

The methods of realization of chemical experiment dealing with the reactions of metal reduction from solutions by electrolysis and cementation are discussed. Teachers can use the presented experiments in such sections of school chemistry course, as "Metals", "Electrolysis", “Oxidation-reduction reactions”. It is shown that given chemical experiment can be realized at various levels of pupil cognitive activity, including demonstration and laboratory experiments, facultative and practical works in chemistry and school research projects.