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"Classification and Transformation of Matter" PPT courseware
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"Classification and Transformation of Matter" Matter and its Changes PPT (Classification of Matter in Lesson 1)
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"Transformation of Sulfur" Nature and Transformation of Substances PPT (Second Lesson: Sulfuric Acid Rain and Its Prevention and Control)
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"Transformation of Matter" PPT (Second Lesson)
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"Transformation of Matter" PPT (first lesson)
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"Diversity of Iron" PPT courseware on the properties and transformation of matter (the transformation relationship between iron and its compounds in Lesson 3)
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"Material Changes and Us" Material Changes PPT Courseware 4
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