Food Tests - GCSE Science Required Practical 

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Dr Chipperfield shows you how to test foods for four different chemicals.
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00:00 Preparing food samples
04:37 Benedict's test (glucose)
05:32 Iodine test (starch)
06:13 Ethanol test (fats and lipids)
07:16 Biuret test (protein)
08:20 Analysis