Unit 1 Retake 2.0 / 5 based on 1 rating ? BiologyASAQA Created by: HannahCreated on: 01-01-13 13:12 What is the chemical test for Proteins? Biuret Test- 1)alkaline solution, add sodium hydroxide 2)add copper sulfate 1 of 6 What colour will the solution turn if proteins are present? PURPLE layer will form, if no protein the solution will stay BLUE 2 of 6 What is the chemical test for Starch? Iodine Test- 1)add Iodine dissolved in potassium iodide solution 3 of 6 What colour will the solution turn if Starch is present? Browny orange to BLUE/BLACK colour. 4 of 6 What chemical test for lipids? Emulsion test- 1)add ethanol and shake 2)pour into water 5 of 6 What colour will the solution turn if lipids are present? Milky white colour. 6 of 6
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