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Chemistry. Grade 9. Textbook

29.99 €
Out of stock
Chemistry. Grade 9. Textbook
29.99 €
In the textbook some definitions of concepts have been clarified and tasks corresponding to the requirements of the USE have been added to the traditional questions and tasks. Material on fullerenes, properties of hydrogen sulfide, sulfur oxide (IY), sulfur oxide (YI), sulfuric acid has been added. Some of the material was transferred to high school (e.g., electrolysis of salts, corrosion of metals, chemical equilibrium, etc.).
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