Comprehension and additional task exercises pages 70 and 71 from Next Page Science KS3 Complete. Accompanying PowerPoint and word searches available for free from the website.
This exercise covers:
• An explanation of what we mean by a pure substance and a mixture
• A description of filtering, magnetic separation and chromatography
• An exercise identifying colours in six chromatograms
• An exercise explaining how chromatography can be used to solve a ‘crime’
• Amazing WHAT? facts
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