OCR A 5.3.1 and 5.3.2 Transition Elements and Qualitative Analysis REVISION
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36:07
OCR A 6.1.1 Aromatic Compounds REVISION
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1:45:33
AQA 2.5 Transition Metals REVISION
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30:28
OCR A 6.3.1 Chromatography and Qualitative Analysis REVISION
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12:15
Why do Transition Metals Form Coloured Compounds?
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5:27
A Sad Moment in American History
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1:11:56
OCR A 5.1.1 How Fast? REVISION
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3:01:41
Intro to Chemistry, Basic Concepts - Periodic Table, Elements, Metric System & Unit Conversion
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7:39