Effectiveness of the Сhemistry Demonstration Experiment in Discourse of General Chemistry
Chemical demonstrations play a significant role in forming of different chemical conceptions. So, close studying of chemical demonstrations leads to the ways of modification demonstrations. Study of chemical demonstration's effectiveness was cared out and its results are discussed. Some factors, which are of a great importance for the results of the demonstration, are marked out. The effectiveness of the demonstration was determined using three parameters: how good the correspondence between demonstration and chemical equation is established, how full the demonstration is described and how correctly the aim of the demonstration is recognized by the students. Also in the article the effectiveness of a number of experiments and the ways of their modification are discussed