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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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2023-09-25 17:34:01
"Chlorine and its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 2 Laboratory preparation method of chlorine and test of chloride ions)
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2023-09-25 18:21:26
"Chlorine and its Compounds" Important elements in seawater - sodium and chlorine PPT (Lesson 2 Laboratory preparation method of chlorine gas and test of chloride ions)
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2023-10-05 09:46:46
"Diversity of Iron" Properties and Transformation of Matter PPT (Lesson 2: The transformation relationship between iron, iron oxides and iron hydroxides, iron and its compounds)
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2023-09-25 17:34:02
"Commonly used physical quantities in chemistry - the amount of matter" PPT courseware for understanding chemical science (lesson 1, the amount of matter and its unit molar mass)
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2023-10-05 09:46:39
"Commonly used physical quantities in chemistry - the amount of matter" PPT courseware for understanding chemical science (lesson 1: the amount of matter and its unit molar mass)
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