Pure substances and formulations

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A revision video for Unit 8 of AQA GCSE Combined Science (8464) and Chemistry (8462) looking at Pure substances (what they are, how to get them out of mixtures, and how to use boiling point data to prove they are pure) and Formulations (what they are, alloys as an example, and calculating percentage by mass of components within them). This covers specification section 8.1.1 Pure substances and 8.1.2 Formulations
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Hi there,
I recently found your channel but cannot find chemistry unit 9. Do you know where I can find this?
Thank you

thomasparsons