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"Changes in the State of Matter in Life and Technology" State of Matter and its Changes PPT Courseware 2
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"Changes in the State of Matter in Life and Technology" State of Matter and its Changes PPT Courseware 5
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"Melting and Solidification" PPT courseware on changes in the state of matter
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"Sublimation and Sublimation" State of Matter and Its Changes PPT Courseware 3
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"Sublimation and Sublimation" State of Matter and Its Changes PPT Courseware 3
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"Topography Changes Caused by Internal Movements of the Earth" Earth's surface and its changes PPT courseware
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"Melting and Solidification" Changes in the State of Matter PPT download
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"Sublimation and Sublimation" State of Matter and Its Changes PPT Courseware 2
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"Active Metal Element - Sodium" Sodium and its compounds PPT
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"Carbon and Its Compounds" Fuel and Combustion PPT Courseware 2
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"Sublimation and Sublimation" State of Matter and Its Changes PPT Courseware 5
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