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"Diversity of Iron" Properties and Transformation of Matter PPT (Transformation between Iron and Its Compounds in Lesson 2)
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"Classification of Elements and Matter" Elements and the Material World PPT (Lesson 1 Material Classification and Its Application)
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"Integration of this Chapter" Nature and Transformation of Matter PPT
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"Diversity of Iron" Properties and Transformation of Matter PPT (Properties of Iron and its Compounds 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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"Changes of Matter" PPT
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"Classification of Elements and Matter" Elements and the Material World PPT (Lesson 1: Relationship between Elements and Matter, Classification of Matter)
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"Classification of Elements and Matter" Elements and the Material World PPT Courseware (Lesson 1 Material Classification and Its Application)
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"Classification of Elements and Matter" Elements and the Material World PPT (Lesson 1: Relationship between Elements and Matter, Classification of Matter)
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