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"Changes of Baking Soda and White Vinegar" PPT teaching courseware on changes in substances
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"Changes in Rice, Starch and Iodine" Changes in Substances PPT Courseware 3
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"Thermal Expansion and Cold Contraction" Changes in Matter PPT Courseware 3
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"Thermal Expansion and Cold Contraction" Changes in Matter PPT Courseware 2
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"The Sun and Earth's Material Changes" PPT Courseware 3
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"Melting and Solidification" State of Matter and Its Changes PPT Courseware 3
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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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"Iron is Rusty" Changes in Matter PPT Courseware 2
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"Several Compounds of Sodium - Flame Color Test" Sodium and its compounds PPT
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"The Sun and Earth's Material Changes" PPT Courseware 2
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"Conversion of Sulfur" Nature and Transformation of Substances PPT (Lesson 2: Sulfuric Acid Rain and Its Prevention and Control)
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"Several Compounds of Sodium - Flame Color Test" Sodium and its compounds PPT
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"The Mass of Objects and Its Measurement" PPT courseware on the scale, mass and density of the material world
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"Iron Salts and Ferrous Salts" Iron and its compounds PPT
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"Iron Salts and Ferrous Salts" Iron and its compounds PPT
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"Physical Quantities Commonly Used in Chemistry - Amount of Substance" Understanding Chemical Science PPT (Lesson 1 Amount of Substance and Its Unit Molar Mass)
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"Quality and Its Measurement" Quality and Density PPT Courseware
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"Combustion and Fire Extinguishing" Changes in Matter PPT Courseware 2
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"Iron is Rusty" PPT teaching courseware on changes in matter
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"The Mass of Objects and Its Measurement" Scale, Mass and Density of the Material World PPT Courseware 3
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"What's in the Soil" Earth's surface and its changes PPT
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"The Mass of Objects and Its Measurement" Scale, Mass and Density of the Material World PPT Courseware 5
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"Classification and Transformation of Matter" Matter and its Changes PPT (Lesson 2: Transformation of Matter)
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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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"The Mass of Objects and Its Measurement" Scale, Mass and Density of the Material World PPT Courseware 3
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"The Mass of Objects and Its Measurement" Scale, Mass and Density of the Material World PPT Courseware 4
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"The Mass of Objects and Its Measurement" Scale, Mass and Density of the Material World PPT Courseware 5
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