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"Classification and Transformation of Matter" Matter and its Changes PPT (Lesson 2: Transformation of Matter)
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"Changes in the State of Matter - Temperature" PPT courseware on states of matter and their changes
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"Vaporization and Liquefaction" Changes in State of Matter PPT (Liquefaction in Lesson 2)
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"Chemical Equations" Chemical Changes and Their Representation PPT Courseware
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"Temperature" PPT teaching courseware on changes in states of matter
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"Vaporization and Liquefaction" Temperature and Physical State Changes PPT Courseware
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"Vaporization and Liquefaction" Temperature and Physical State Changes PPT Courseware
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《Sodium oxide and sodium peroxide》Sodium and its compounds PPT
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《Sodium oxide and sodium peroxide》Sodium and its compounds PPT
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"Vaporization and Liquefaction" State of Matter and Its Changes PPT Courseware 2
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"Vaporization and Liquefaction" State of Matter and Its Changes PPT Courseware 4
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《Sodium oxide and sodium peroxide》Sodium and its compounds PPT
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"Vaporization and Liquefaction" State of Matter and Its Changes PPT Courseware 2
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