Year 9. Science. Chemistry Unit.
From January to April of this year, Year 9 students studied the Chemistry Unit: the structure of the atom through the periodic table, chemical reactions and equations of chemical reactions, ionic equations, percentage concentration of solutions, practical problems on mixing solutions with different concentrations. The main difficulties that students encountered were related to memorizing the names of chemical compounds and the correct spelling of their formulas. Over the course of several classes, we practiced the necessary skills and memory in various forms: training in pairs and small groups, competitions between boys and girls, Kahoot, etc. In addition, students completed a lot of practical laboratory work: demonstration of signs of chemical reactions and types of chemical reactions, ion exchange and neutralization reactions, properties of metals, titration, preparation of solutions of a given concentration, obtaining new solutions, etc.
The students applied the knowledge they gained when completing projects and presenting them on April 11 on the Open Day. As last time (on the November Open Day), students presented their projects in two forms: live presentations and practical workshops. Elly, Lorenzo and Serhii successfully presented on the topic of “How changes in percentage concentration affect living organisms”. They clearly showed “What rapid and massive melting of ice in the ocean can lead to”; “How excess salt (salt is used in winter to melt ice on roads) affects the germination of plant seeds”; “Why do we want to drink after eating salty/sweet food” (using plasmolysis and deplasmolysis in living plant cells as an example). Emmy, Adam, Anna and Norbert presented a project on “Exploring Ionic Equations with Chemical Experiments” and successfully conducted a workshop on this topic. Alex, Defne presented a project on the topic of “Mixtures of Solutions”. Tadeas, Martin and Arthur explained in detail and clearly “What is a Neutralization Reaction”.
In conclusion, we can say that the students’ presentations were of high quality, at a good level.
