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"Elements, oxides and hydroxides of iron" Iron and its compounds PPT
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2023-09-25 18:21:30
"Valence" Representation of Chemical Elements and Substance Composition PPT Courseware
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"What's in the Soil" Earth's Surface and Its Changes PPT Courseware 3
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"Mechanical Energy and Its Transformation into Potential Energy" PPT
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"Valence" Representation of Chemical Elements and Substance Composition PPT Courseware
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"Elements, oxides and hydroxides of iron" Iron and its compounds PPT
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2023-09-25 18:21:30
"Valence" Representation of Chemical Elements and Substance Composition PPT Courseware
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2023-09-25 18:21:21
"Melting and Solidification" PPT teaching courseware on changes in states of matter
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2023-09-25 18:18:55
"Topography of the Earth's Surface" Earth's surface and its changes PPT
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"Oxidation-Reduction Reaction" Substances and Their Changes PPT (Lesson 2 Oxidizing Agents and Reducing Agents)
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"Vaporization and Liquefaction" PPT Courseware on Changes in State of Matter 4
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2023-09-25 18:19:07
"Sublimation and Sublimation" State of Matter and Its Changes PPT Courseware 5
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2023-09-25 18:20:00
"New Changes in Hometown" PPT
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2023-09-25 17:32:37
"Vaporization and Liquefaction" PPT Courseware on Changes in State of Matter 3
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2023-09-25 18:19:07
"Starting from Global Warming" Material Forms and Changes PPT Courseware
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2023-09-25 18:20:52
"Vaporization and Liquefaction" Changes in State of Matter PPT (Liquefaction in Lesson 2)
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"Sublimation and Sublimation" State of Matter and Its Changes PPT Courseware 2
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"Vaporization and Liquefaction" PPT Courseware on Changes in State of Matter 2
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"Vaporization and Liquefaction" Changes in State of Matter PPT Courseware 5
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"Vaporization and Liquefaction" PPT Courseware on Changes in State of Matter 6
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