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Determining valence and writing chemical formulas based on it. Relative Atomic and Molecular Mass: Basic calculations of Arcap A sub r Mrcap M sub r Part 2: Key Chemical Laws & Calculations

Exercises on distinguishing homogeneous and heterogeneous mixtures and methods of separation.

Сборник задач по химии. 8 класс - Аверсэв

Identifying chemical reactions versus physical changes.

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