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Unit 4 WJEC 5 PED & YED播放量:1067presentation skill -
AQA 9-1 Chemistry: Atoms, elements, comp播放量:711presentation skill -
AQA 9-1 Chemistry: Chromatography播放量:689presentation skill
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AQA 9-1 Chemistry: Conservation of mass播放量:623presentation skill
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AQA 9-1 Chemistry: Crude Oil and Alkanes播放量:615presentation skill
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AQA 9-1 Chemistry: Exothermic and endoth播放量:658presentation skill
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AQA 9-1 Chemistry: Extracting metals播放量:616presentation skill
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AQA 9-1 Chemistry: Factors affecting rat播放量:679presentation skill
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AQA 9-1 Chemistry: Gas tests播放量:626presentation skill
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AQA 9-1 Chemistry: Giant covalent struct播放量:646presentation skill
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AQA 9-1 Chemistry: Ionic bonding播放量:726presentation skill
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AQA 9-1 Chemistry: Life cycle assessment播放量:649presentation skill